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Algebra/solving equations with different variables

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Expert: - 10/4/2011


Question
5x+2y=7. Solve for y

Answer
The first thiing to do is isolate the expression with y, so subtract 5x from both sides.
This gives 2y = 7 - 5x.

The next thing to do is to divide by the multiplier, so divide both sides by 2.
This gives y = (7-5x)/2.  This could also be written y = 3.5 - 2.5x.

Algebra

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Scott A Wilson

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Any algebraic question you've got, like linear, quadratic, exponential, etc.

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solving story problems solving linear, parabolic, and 3rd order equations solving equations with multiple variables

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