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

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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

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