20+8(a-11)=-13

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Solution for 20+8(a-11)=-13 equation: 



20+8(a-11)=-13

We move all terms to the left:

20+8(a-11)-(-13)=0

We add all the numbers together, and all the variables

8(a-11)+33=0

We multiply parentheses

8a-88+33=0

We add all the numbers together, and all the variables

8a-55=0

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

8a=55

a=55/8

a=6+7/8

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