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28x-36-10\left(3x+4\right)=40\left(1-x\right)
Use the distributive property to multiply 4 by 7x-9.
28x-36-30x-40=40\left(1-x\right)
Use the distributive property to multiply -10 by 3x+4.
-2x-36-40=40\left(1-x\right)
Combine 28x and -30x to get -2x.
-2x-76=40\left(1-x\right)
Subtract 40 from -36 to get -76.
-2x-76=40-40x
Use the distributive property to multiply 40 by 1-x.
-2x-76+40x=40
Add 40x to both sides.
38x-76=40
Combine -2x and 40x to get 38x.
38x=40+76
Add 76 to both sides.
38x=116
Add 40 and 76 to get 116.
x=\frac{116}{38}
Divide both sides by 38.
x=\frac{58}{19}
Reduce the fraction \frac{116}{38} to lowest terms by extracting and canceling out 2.