2a(a+5)-a(2a+12)=-2

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Solution for 2a(a+5)-a(2a+12)=-2 equation: 



2a(a+5)-a(2a+12)=-2

We move all terms to the left:

2a(a+5)-a(2a+12)-(-2)=0

We add all the numbers together, and all the variables

2a(a+5)-a(2a+12)+2=0

We multiply parentheses

2a^2-2a^2+10a-12a+2=0

We add all the numbers together, and all the variables

-2a+2=0

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

-2a=-2

a=-2/-2

a=1

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