-5(6a-9)=-90

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Solution for -5(6a-9)=-90 equation: 



-5(6a-9)=-90

We move all terms to the left:

-5(6a-9)-(-90)=0

We add all the numbers together, and all the variables

-5(6a-9)+90=0

We multiply parentheses

-30a+45+90=0

We add all the numbers together, and all the variables

-30a+135=0

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

-30a=-135

a=-135/-30

a=4+1/2

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