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x+4\left(2-x\right)=2\times 2x-4\left(5\times 4+1\right)
Multiply both sides of the equation by 16, the least common multiple of 16,4,8.
x+8-4x=2\times 2x-4\left(5\times 4+1\right)
Use the distributive property to multiply 4 by 2-x.
-3x+8=2\times 2x-4\left(5\times 4+1\right)
Combine x and -4x to get -3x.
-3x+8=4x-4\left(5\times 4+1\right)
Multiply 2 and 2 to get 4.
-3x+8=4x-4\left(20+1\right)
Multiply 5 and 4 to get 20.
-3x+8=4x-4\times 21
Add 20 and 1 to get 21.
-3x+8=4x-84
Multiply -4 and 21 to get -84.
-3x+8-4x=-84
Subtract 4x from both sides.
-7x+8=-84
Combine -3x and -4x to get -7x.
-7x=-84-8
Subtract 8 from both sides.
-7x=-92
Subtract 8 from -84 to get -92.
x=\frac{-92}{-7}
Divide both sides by -7.
x=\frac{92}{7}
Fraction \frac{-92}{-7} can be simplified to \frac{92}{7} by removing the negative sign from both the numerator and the denominator.