Question

What is the solution to the equation?



5(8 + 7) = 5 • x + 5 • 7









A.

x = 1








B.

x = 5








C.

x = 7








D.

x = 8

Answer 1

First you will want to distribute the 5 to everything in the parentheses..
Your result would be (40 + 35) = 5x + 35


Next you would combine like terms on the left side which means you add 40 and 35 which is 75..
so 75 = 5x + 35

Next you would subtract 35 from both sides so that "5x" is by itself and you can solve for x..

so 75- 35= 40... therefore 40= 5x

Now, you will divide both sides by 5, so that you get x. 40/5 is 8!

x=8

Answer 2

Let's solve your equation step-by-step.
5(8+7)=5x+(5)(7)
Step 1: Simplify both sides of the equation.
75=5x+35
Step 2: Flip the equation.
5x+35=75
Step 3: Subtract 35 from both sides.
5x+35−35=75−35
5x=40
Step 4: Divide both sides by 5.
5x
5
=
40
5
x=8