Solve for b
b=-30
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2b-40=5b+50
Multiply both sides of the equation by 10, the least common multiple of 5,2.
2b-40-5b=50
Subtract 5b from both sides.
-3b-40=50
Combine 2b and -5b to get -3b.
-3b=50+40
Add 40 to both sides.
-3b=90
Add 50 and 40 to get 90.
b=\frac{90}{-3}
Divide both sides by -3.
b=-30
Divide 90 by -3 to get -30.
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