.30a=a-140

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Solution for .30a=a-140 equation: 



.30a=a-140

We move all terms to the left:

.30a-(a-140)=0

We get rid of parentheses

.30a-a+140=0

We add all the numbers together, and all the variables

-0.7a+140=0

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

-0.7a=-140

a=-140/-0.7

a=+200

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