77=16-7a

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Solution for 77=16-7a equation: 



77=16-7a

We move all terms to the left:

77-(16-7a)=0

We add all the numbers together, and all the variables

-(-7a+16)+77=0

We get rid of parentheses

7a-16+77=0

We add all the numbers together, and all the variables

7a+61=0

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

7a=-61

a=-61/7

a=-8+5/7

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