0,7=7,7-2a

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Solution for 0,7=7,7-2a equation: 



0.7=7.7-2a

We move all terms to the left:

0.7-(7.7-2a)=0

We add all the numbers together, and all the variables

-(-2a+7.7)+0.7=0

We get rid of parentheses

2a-7.7+0.7=0

We add all the numbers together, and all the variables

2a-7=0

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

2a=7

a=7/2

a=3+1/2

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