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16.5=-8.5(2z+3.5)
We move all terms to the left:
16.5-(-8.5(2z+3.5))=0
We calculate terms in parentheses: -(-8.5(2z+3.5)), so:We get rid of parentheses
-8.5(2z+3.5)
We multiply parentheses
-17z-29.75
Back to the equation:
-(-17z-29.75)
17z+29.75+16.5=0
We add all the numbers together, and all the variables
17z+46.25=0
We move all terms containing z to the left, all other terms to the right
17z=-46.25
z=-46.25/17
z=-2+9.8/13.6
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