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3.5(2.25+z)=14
We move all terms to the left:
3.5(2.25+z)-(14)=0
We add all the numbers together, and all the variables
3.5(z+2.25)-14=0
We multiply parentheses
3.5z+7.875-14=0
We add all the numbers together, and all the variables
3.5z-6.125=0
We move all terms containing z to the left, all other terms to the right
3.5z=6.125
z=6.125/3.5
z=1+2.625/3.5
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