.8(3+a)=-4

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Solution for .8(3+a)=-4 equation: 



.8(3+a)=-4

We move all terms to the left:

.8(3+a)-(-4)=0

We add all the numbers together, and all the variables

.8(a+3)-(-4)=0

We add all the numbers together, and all the variables

.8(a+3)+4=0

We multiply parentheses

0.8a+2.4+4=0

We add all the numbers together, and all the variables

0.8a+6.4=0

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

0.8a=-6.4

a=-6.4/0.8

a=-8

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