Solve for y
y = -\frac{9}{2} = -4\frac{1}{2} = -4.5
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2y+3=6y+21
Multiply both sides of the equation by 3.
2y+3-6y=21
Subtract 6y from both sides.
-4y+3=21
Combine 2y and -6y to get -4y.
-4y=21-3
Subtract 3 from both sides.
-4y=18
Subtract 3 from 21 to get 18.
y=\frac{18}{-4}
Divide both sides by -4.
y=-\frac{9}{2}
Reduce the fraction \frac{18}{-4} to lowest terms by extracting and canceling out 2.
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