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15=2\left(y+2\right)-3
Multiply both sides of the equation by 18, the least common multiple of 6,9.
15=2y+4-3
Use the distributive property to multiply 2 by y+2.
15=2y+1
Subtract 3 from 4 to get 1.
2y+1=15
Swap sides so that all variable terms are on the left hand side.
2y=15-1
Subtract 1 from both sides.
2y=14
Subtract 1 from 15 to get 14.
y=\frac{14}{2}
Divide both sides by 2.
y=7
Divide 14 by 2 to get 7.