-4(u-9)=-2u+20

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Solution for -4(u-9)=-2u+20 equation: 


Simplifying
-4(u + -9) = -2u + 20

Reorder the terms:
-4(-9 + u) = -2u + 20
(-9 * -4 + u * -4) = -2u + 20
(36 + -4u) = -2u + 20

Reorder the terms:
36 + -4u = 20 + -2u

Solving
36 + -4u = 20 + -2u

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '2u' to each side of the equation.
36 + -4u + 2u = 20 + -2u + 2u

Combine like terms: -4u + 2u = -2u
36 + -2u = 20 + -2u + 2u

Combine like terms: -2u + 2u = 0
36 + -2u = 20 + 0
36 + -2u = 20

Add '-36' to each side of the equation.
36 + -36 + -2u = 20 + -36

Combine like terms: 36 + -36 = 0
0 + -2u = 20 + -36
-2u = 20 + -36

Combine like terms: 20 + -36 = -16
-2u = -16

Divide each side by '-2'.
u = 8

Simplifying
u = 8

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