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5(2a-6)=-10
We move all terms to the left:
5(2a-6)-(-10)=0
We add all the numbers together, and all the variables
5(2a-6)+10=0
We multiply parentheses
10a-30+10=0
We add all the numbers together, and all the variables
10a-20=0
We move all terms containing a to the left, all other terms to the right
10a=20
a=20/10
a=2
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