x+(x+20)+40=180

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Solution for x+(x+20)+40=180 equation:



x+(x+20)+40=180
We move all terms to the left:
x+(x+20)+40-(180)=0
We add all the numbers together, and all the variables
x+(x+20)-140=0
We get rid of parentheses
x+x+20-140=0
We add all the numbers together, and all the variables
2x-120=0
We move all terms containing x to the left, all other terms to the right
2x=120
x=120/2
x=60

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