Solve for V, a, b
b=5
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800=V\times 2
Consider the first equation. Anything plus zero gives itself.
V\times 2=800
Swap sides so that all variable terms are on the left hand side.
V=\frac{800}{2}
Divide both sides by 2.
V=400
Divide 800 by 2 to get 400.
V=400 a=5 b=5
The system is now solved.
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