-5u-20=3(u-4)

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Solution for -5u-20=3(u-4) equation:


Simplifying
-5u + -20 = 3(u + -4)

Reorder the terms:
-20 + -5u = 3(u + -4)

Reorder the terms:
-20 + -5u = 3(-4 + u)
-20 + -5u = (-4 * 3 + u * 3)
-20 + -5u = (-12 + 3u)

Solving
-20 + -5u = -12 + 3u

Solving for variable 'u'.

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

Add '-3u' to each side of the equation.
-20 + -5u + -3u = -12 + 3u + -3u

Combine like terms: -5u + -3u = -8u
-20 + -8u = -12 + 3u + -3u

Combine like terms: 3u + -3u = 0
-20 + -8u = -12 + 0
-20 + -8u = -12

Add '20' to each side of the equation.
-20 + 20 + -8u = -12 + 20

Combine like terms: -20 + 20 = 0
0 + -8u = -12 + 20
-8u = -12 + 20

Combine like terms: -12 + 20 = 8
-8u = 8

Divide each side by '-8'.
u = -1

Simplifying
u = -1

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