Solve for x
x=7.85
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4.35=x-3.5
Subtract 0.5 from -3 to get -3.5.
x-3.5=4.35
Swap sides so that all variable terms are on the left hand side.
x=4.35+3.5
Add 3.5 to both sides.
x=7.85
Add 4.35 and 3.5 to get 7.85.
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