-5u+7=-3(u-7)

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Solution for -5u+7=-3(u-7) equation:


Simplifying
-5u + 7 = -3(u + -7)

Reorder the terms:
7 + -5u = -3(u + -7)

Reorder the terms:
7 + -5u = -3(-7 + u)
7 + -5u = (-7 * -3 + u * -3)
7 + -5u = (21 + -3u)

Solving
7 + -5u = 21 + -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.
7 + -5u + 3u = 21 + -3u + 3u

Combine like terms: -5u + 3u = -2u
7 + -2u = 21 + -3u + 3u

Combine like terms: -3u + 3u = 0
7 + -2u = 21 + 0
7 + -2u = 21

Add '-7' to each side of the equation.
7 + -7 + -2u = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -2u = 21 + -7
-2u = 21 + -7

Combine like terms: 21 + -7 = 14
-2u = 14

Divide each side by '-2'.
u = -7

Simplifying
u = -7

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