7(u-3)-7=-3(-8u+8)-9u

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Solution for 7(u-3)-7=-3(-8u+8)-9u equation:


Simplifying
7(u + -3) + -7 = -3(-8u + 8) + -9u

Reorder the terms:
7(-3 + u) + -7 = -3(-8u + 8) + -9u
(-3 * 7 + u * 7) + -7 = -3(-8u + 8) + -9u
(-21 + 7u) + -7 = -3(-8u + 8) + -9u

Reorder the terms:
-21 + -7 + 7u = -3(-8u + 8) + -9u

Combine like terms: -21 + -7 = -28
-28 + 7u = -3(-8u + 8) + -9u

Reorder the terms:
-28 + 7u = -3(8 + -8u) + -9u
-28 + 7u = (8 * -3 + -8u * -3) + -9u
-28 + 7u = (-24 + 24u) + -9u

Combine like terms: 24u + -9u = 15u
-28 + 7u = -24 + 15u

Solving
-28 + 7u = -24 + 15u

Solving for variable 'u'.

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

Add '-15u' to each side of the equation.
-28 + 7u + -15u = -24 + 15u + -15u

Combine like terms: 7u + -15u = -8u
-28 + -8u = -24 + 15u + -15u

Combine like terms: 15u + -15u = 0
-28 + -8u = -24 + 0
-28 + -8u = -24

Add '28' to each side of the equation.
-28 + 28 + -8u = -24 + 28

Combine like terms: -28 + 28 = 0
0 + -8u = -24 + 28
-8u = -24 + 28

Combine like terms: -24 + 28 = 4
-8u = 4

Divide each side by '-8'.
u = -0.5

Simplifying
u = -0.5

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