5x-7(-4x for x=2

Question

you have to simplify and evaluate

Answer 1

If the problem is supposed to read:

 

5x-7 = -4x where x=2, then all you need to do is plug in x=2.

 

5(2)-7 = -4(2)

 

You'll follow Order of Operations to solve- PEMDAS (Parenthesis, Exponents, Multiply, Divide, Add, and Subtract). You don't have any distributing to do, nor do you have any exponents. We start by multiplying.

 

So...

 

Multiply: 5(2)-7 = -4(2)

 

Subtract: 10 - 7 = -8

 

3 = -8

 

(no solution - x cannot equal 2)