Solve for a
a=-1
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3+a=\frac{0.5}{0.25}
Divide both sides by 0.25.
3+a=\frac{50}{25}
Expand \frac{0.5}{0.25} by multiplying both numerator and the denominator by 100.
3+a=2
Divide 50 by 25 to get 2.
a=2-3
Subtract 3 from both sides.
a=-1
Subtract 3 from 2 to get -1.
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Limits
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