Solve for y
y = \frac{305}{2} = 152\frac{1}{2} = 152.5
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5\left(240-y\right)+7\left(240-y\right)=1050
Multiply both sides of the equation by 70, the least common multiple of 14,10.
1200-5y+7\left(240-y\right)=1050
Use the distributive property to multiply 5 by 240-y.
1200-5y+1680-7y=1050
Use the distributive property to multiply 7 by 240-y.
2880-5y-7y=1050
Add 1200 and 1680 to get 2880.
2880-12y=1050
Combine -5y and -7y to get -12y.
-12y=1050-2880
Subtract 2880 from both sides.
-12y=-1830
Subtract 2880 from 1050 to get -1830.
y=\frac{-1830}{-12}
Divide both sides by -12.
y=\frac{305}{2}
Reduce the fraction \frac{-1830}{-12} to lowest terms by extracting and canceling out -6.
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