Question

What is 87+x=100? A. 13 B.41 C. 11 D. 20

Answer 1

Hey there!

When we solve for x, we need to isolate x on one side.

This is just a one-step equation, meaning there is only one thing we need to do to solve for x, or isolate x.

Starting with 87 + x = 100:

Subtract 87 from each side.

87 - 87 + x = 100 - 87

Simplify. Subtracting 87 from 87 makes it equal to 0.

x = 13

Your answer is A. 13.

Hope this helps!

Answer 2

Hello!

The answer to the problem is A) 13

Move all terms containing x to the left, all other terms to the right.

Add '-87' to each side of the equation

$87 + -87 + x = 100 + -87$

Combine like terms: 87 + -87 = 0

$0 + x = 100 + -87$

$x = 100 + -87$

Get your answer

$x=13$

Hope This Helps!