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-4(2x-5)=-4(x*10)
We move all terms to the left:
-4(2x-5)-(-4(x*10))=0
We add all the numbers together, and all the variables
-4(2x-5)-(-4(+x*10))=0
We multiply parentheses
-8x-(-4(+x*10))+20=0
We calculate terms in parentheses: -(-4(+x*10)), so:We get rid of parentheses
-4(+x*10)
We multiply parentheses
-40x
Back to the equation:
-(-40x)
-8x+40x+20=0
We add all the numbers together, and all the variables
32x+20=0
We move all terms containing x to the left, all other terms to the right
32x=-20
x=-20/32
x=-5/8
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