10-(-3(x-7)+5x)+40=5(4-3x
Solve for x
x=-\frac{9}{13}\approx -0.692307692
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10-\left(-3x+21+5x\right)+40=5\left(4-3x\right)
Use the distributive property to multiply -3 by x-7.
10-\left(2x+21\right)+40=5\left(4-3x\right)
Combine -3x and 5x to get 2x.
10-2x-21+40=5\left(4-3x\right)
To find the opposite of 2x+21, find the opposite of each term.
-11-2x+40=5\left(4-3x\right)
Subtract 21 from 10 to get -11.
29-2x=5\left(4-3x\right)
Add -11 and 40 to get 29.
29-2x=20-15x
Use the distributive property to multiply 5 by 4-3x.
29-2x+15x=20
Add 15x to both sides.
29+13x=20
Combine -2x and 15x to get 13x.
13x=20-29
Subtract 29 from both sides.
13x=-9
Subtract 29 from 20 to get -9.
x=\frac{-9}{13}
Divide both sides by 13.
x=-\frac{9}{13}
Fraction \frac{-9}{13} can be rewritten as -\frac{9}{13} by extracting the negative sign.
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