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(2+30)=(2z-90)
We move all terms to the left:
(2+30)-((2z-90))=0
We add all the numbers together, and all the variables
-((2z-90))+32=0
We calculate terms in parentheses: -((2z-90)), so:We get rid of parentheses
(2z-90)
We get rid of parentheses
2z-90
Back to the equation:
-(2z-90)
-2z+90+32=0
We add all the numbers together, and all the variables
-2z+122=0
We move all terms containing z to the left, all other terms to the right
-2z=-122
z=-122/-2
z=+61
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