Solve for I
I = \frac{140}{3} = 46\frac{2}{3} \approx 46.666666667
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8I+40I-2240=0
Use the distributive property to multiply 40 by I-56.
48I-2240=0
Combine 8I and 40I to get 48I.
48I=2240
Add 2240 to both sides. Anything plus zero gives itself.
I=\frac{2240}{48}
Divide both sides by 48.
I=\frac{140}{3}
Reduce the fraction \frac{2240}{48} to lowest terms by extracting and canceling out 16.
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