7(x+20)=2(x+20)-20

Solution for 7(x+20)=2(x+20)-20 equation:

7(x+20)=2(x+20)-20

We move all terms to the left:

7(x+20)-(2(x+20)-20)=0

We multiply parentheses

7x-(2(x+20)-20)+140=0


We calculate terms in parentheses: -(2(x+20)-20), so:

2(x+20)-20

We multiply parentheses

2x+40-20

We add all the numbers together, and all the variables

2x+20

Back to the equation:

-(2x+20)


We get rid of parentheses

7x-2x-20+140=0

We add all the numbers together, and all the variables

5x+120=0

We move all terms containing x to the left, all other terms to the right

5x=-120

x=-120/5

x=-24