The difference of 10 times a number and 5 is equal to the sum of 2 times a number and 3 z

Question

What is the value of x , the number ?

Answer 1

For this problem, use x as a variable that represents the number.

Here is the set-up:

10x - 5 = 2x + 3z.

Looking at this, we can solve for the number in terms of z.

First, subtract 2x from both sides:

8x - 5 = 3z

Then add 5:

8x = 3z + 5

Finally, divide both sides by 8:

x = (3z + 5)/8