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S=n/2(a+l) solve for a

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Answer to a math question S=n/2(a+l) solve for a

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1. Start with the equation:

S = \frac{n}{2} (a + l)

2. Multiply both sides by 2 to get rid of the fraction:

2S = n (a + l)

3. Divide both sides by

to isolate $a + l$:

\frac{2S}{n} = a + l

4. Subtract

from both sides to solve for

a = \frac{2S}{n} - l

So the solution is

a = \frac{2S}{n} - l

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S=n/2(a+l) solve for a

Answer to a math question S=n/2(a+l) solve for a

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