17-5(a-1)=20-7a

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Solution for 17-5(a-1)=20-7a equation:



17-5(a-1)=20-7a
We move all terms to the left:
17-5(a-1)-(20-7a)=0
We add all the numbers together, and all the variables
-5(a-1)-(-7a+20)+17=0
We multiply parentheses
-5a-(-7a+20)+5+17=0
We get rid of parentheses
-5a+7a-20+5+17=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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