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30=-5(1-x)+3(x+1)
We move all terms to the left:
30-(-5(1-x)+3(x+1))=0
We add all the numbers together, and all the variables
-(-5(-1x+1)+3(x+1))+30=0
We calculate terms in parentheses: -(-5(-1x+1)+3(x+1)), so:We get rid of parentheses
-5(-1x+1)+3(x+1)
We multiply parentheses
5x+3x-5+3
We add all the numbers together, and all the variables
8x-2
Back to the equation:
-(8x-2)
-8x+2+30=0
We add all the numbers together, and all the variables
-8x+32=0
We move all terms containing x to the left, all other terms to the right
-8x=-32
x=-32/-8
x=+4
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