-9(u-5)=-4u+20

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Solution for -9(u-5)=-4u+20 equation:


Simplifying
-9(u + -5) = -4u + 20

Reorder the terms:
-9(-5 + u) = -4u + 20
(-5 * -9 + u * -9) = -4u + 20
(45 + -9u) = -4u + 20

Reorder the terms:
45 + -9u = 20 + -4u

Solving
45 + -9u = 20 + -4u

Solving for variable 'u'.

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

Add '4u' to each side of the equation.
45 + -9u + 4u = 20 + -4u + 4u

Combine like terms: -9u + 4u = -5u
45 + -5u = 20 + -4u + 4u

Combine like terms: -4u + 4u = 0
45 + -5u = 20 + 0
45 + -5u = 20

Add '-45' to each side of the equation.
45 + -45 + -5u = 20 + -45

Combine like terms: 45 + -45 = 0
0 + -5u = 20 + -45
-5u = 20 + -45

Combine like terms: 20 + -45 = -25
-5u = -25

Divide each side by '-5'.
u = 5

Simplifying
u = 5

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