2(a+20)=140

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Solution for 2(a+20)=140 equation: 



2(a+20)=140

We move all terms to the left:

2(a+20)-(140)=0

We multiply parentheses

2a+40-140=0

We add all the numbers together, and all the variables

2a-100=0

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

2a=100

a=100/2

a=50

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