Solve for a
a = -\frac{38}{3} = -12\frac{2}{3} \approx -12.666666667
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3a=-42+4
Add 4 to both sides.
3a=-38
Add -42 and 4 to get -38.
a=\frac{-38}{3}
Divide both sides by 3.
a=-\frac{38}{3}
Fraction \frac{-38}{3} can be rewritten as -\frac{38}{3} by extracting the negative sign.
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