Solve for V
V=99
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1.5\times 18=V-72
Multiply both sides by 18.
27=V-72
Multiply 1.5 and 18 to get 27.
V-72=27
Swap sides so that all variable terms are on the left hand side.
V=27+72
Add 72 to both sides.
V=99
Add 27 and 72 to get 99.
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