Question

5(4 − x) = −5x + 20 i need help

Answer 1

Infinite solutions.

Explanation:

Distribute the 5 to the numbers inside the parenthesis.

5 × 4=20

5 × -x=-5x

-5x+20.

They are the same.

-5x+20=-5x+20

Add 5x on both sides:

-5x+5x+20=-5x+5x+20

20=20

So there are infinite solutions.

Answer 2

x=4

Explanation:

-5(4-x)=-5x+20

We simplify the equation to the form, which is simple to understand

-5(4-x)=-5x+20

Reorder the terms in parentheses

+(-20+5x)=-5x+20

Remove unnecessary parentheses

-20+5x=-5x+20

We move all terms containing x to the left and all other terms to the right.

+5x+5x=+20+20

We simplify left and right side of the equation.

+10x=+40

We divide both sides of the equation by 10 to get x.

x=4