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5-6x+21=4\left(x-2\right)-\left(7-x\right)
Use the distributive property to multiply -3 by 2x-7.
26-6x=4\left(x-2\right)-\left(7-x\right)
Add 5 and 21 to get 26.
26-6x=4x-8-\left(7-x\right)
Use the distributive property to multiply 4 by x-2.
26-6x=4x-8-7-\left(-x\right)
To find the opposite of 7-x, find the opposite of each term.
26-6x=4x-8-7+x
The opposite of -x is x.
26-6x=4x-15+x
Subtract 7 from -8 to get -15.
26-6x=5x-15
Combine 4x and x to get 5x.
26-6x-5x=-15
Subtract 5x from both sides.
26-11x=-15
Combine -6x and -5x to get -11x.
-11x=-15-26
Subtract 26 from both sides.
-11x=-41
Subtract 26 from -15 to get -41.
x=\frac{-41}{-11}
Divide both sides by -11.
x=\frac{41}{11}
Fraction \frac{-41}{-11} can be simplified to \frac{41}{11} by removing the negative sign from both the numerator and the denominator.