4x–5= 15, find x

Answer 1

first you want to add 5 to both sides to combine like terms!

4x - 5 = 15

4x = 20

then divide by 4 to get "x" by itself

x = 20/4 = 5

Answer 2

Here's the steps:

4x - 5 = 15

We want to isolate x. So we will start by keeping x on one side and everything else to the other side of the equal sign.

4x - 5 + 5 = 15 + 5

Add 5 to both sides

4x = 20

Cancel and simplify

4x / 4 = 20 / 4

Divide both sides by 4

x = 5

Now, plug x = 5 back into the equation to show the proof.

4x - 5 = 15 x = 5

4(5) - 5 = 15 Simplify

20 - 5 = 15

15 = 15

Proven!

Answer 3

First, isolate the variable to simplify the equation.

Step1: Add 5 to both sides

4x(-5+5)=4x

15+5=20

Step 2: Divide both sides by 4

4x/4=x

20/4=5

Simplified equation: x=5

Final Answer: x=5

Answer 4

4x - 5 = 15

Think of it as making 'x' stand on its own.

Step 1. Add 5 to both sides of the equation

4x -5 + 5 = 15 + 15

Step 2. Simplify both sides of the equation

4x + 0 = 20

Step 3. Now remember we want to make 'x' stand on its own.

4x = 20

Step 4. Divide both sides by the coefficient of x which is 4

4x/4 = 20/4

Step 5. Now simplify

x = 20/4 = 5

x = 5

Answer 5

Hi there,

As a note, it is good to try your solution after solving an equation to verify that it is the correct solution.

Here we would substitute 5 for x and verify that this is correct:

4x - 5 = 15

4(5) - 5 = 20 - 5

20-5=15

Therefore this is the correct solution.

This is more important to try with more complicated equations.

Irene

Answer 6

4x-5 =15

add 5 to both sides

4x = 20

divide both sides by 4

x = 20/4 = 5

x=5 is the answer

or graph the original equation. use desmos on line or a TI83

then find the x intercept(s) = the real solution(s), if any

Answer 7

4x–5= 15, find x

When you want to solve for x, you want to isolate x, so that it is alone.

To do this, you move 5 to the right side by performing the opposite operation. The opposite of subtraction (-) is addition (+), so we ADD 5 to BOTH sides of the equation to cancel 5 on the left and move it to the right.

4x–5 = 15

+5 +5

4x = 20

Now, we have moved the 5 to the right side, but we are not done yet. x is still not alone because it still has a 4 in front of it. 4x is the same thing as 4 TIMES x, so to move 4 to the right side, we perform the opposite operation of the multiplication sign (*), which is division (÷). This means we have to DIVIDE BY 4 on BOTH sides to cancel it out on the left and move it to the right.

4x = 20

4x ÷ 4 = 20 ÷ 4

x = 5

Now, x is completely alone on the left, so we have solved for x and got our value: 5.

Answer 8

My favorite thing to do is to solve algebra in a snow cone shape. It makes it so much more fun!

Step one write out your equation 4x-5=15

Step 2 we want to move our five to the right side since it is the only value without an x on the left

equation becomes 4x=20

Step 3 we want to divide both sides by 4 so that our x can be alone on the left

You will get x=5

Answer 9

Question: Solve for x:

4x – 5 = 15

Tip: When solving equations, your goal is to get the variable (x) by itself using inverse operations like adding/subtracting or multiplying/dividing.

Let's break it down together:

1. Start with the equation:

4x – 5 = 15

1. Add 5 to both sides to move the constant term:

4x – 5 + 5 = 15 + 5

4x = 20

1. Divide both sides by 4 to isolate x:

4x ÷ 4 = 20 ÷ 4

x = 5

Final Answer: x = 5

Answer 10

Solution: 4x–5= 15

4x= 15+5 collect like terms

4x=20 divide both sides by 4

4x/4= 20/4 = x= 5. 5 is the answer.