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Solve for b
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Solve for a
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-6\times 56-a\times 3a=6\times 5b-a\times 3a
Multiply both sides of the equation by 6a\left(-x+y\right), the least common multiple of ax-ay,6y-6x,6\left(y-x\right).
-336-a\times 3a=6\times 5b-a\times 3a
Multiply -6 and 56 to get -336.
-336-a^{2}\times 3=6\times 5b-a\times 3a
Multiply a and a to get a^{2}.
-336-a^{2}\times 3=6\times 5b-a^{2}\times 3
Multiply a and a to get a^{2}.
-336-a^{2}\times 3=30b-a^{2}\times 3
Multiply 6 and 5 to get 30.
30b-a^{2}\times 3=-336-a^{2}\times 3
Swap sides so that all variable terms are on the left hand side.
30b=-336-a^{2}\times 3+a^{2}\times 3
Add a^{2}\times 3 to both sides.
30b=-336-3a^{2}+a^{2}\times 3
Multiply -1 and 3 to get -3.
30b=-336
Combine -3a^{2} and a^{2}\times 3 to get 0.
b=\frac{-336}{30}
Divide both sides by 30.
b=-\frac{56}{5}
Reduce the fraction \frac{-336}{30} to lowest terms by extracting and canceling out 6.