-3(-9u+7)-4u=7(u-2)-3

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Solution for -3(-9u+7)-4u=7(u-2)-3 equation:


Simplifying
-3(-9u + 7) + -4u = 7(u + -2) + -3

Reorder the terms:
-3(7 + -9u) + -4u = 7(u + -2) + -3
(7 * -3 + -9u * -3) + -4u = 7(u + -2) + -3
(-21 + 27u) + -4u = 7(u + -2) + -3

Combine like terms: 27u + -4u = 23u
-21 + 23u = 7(u + -2) + -3

Reorder the terms:
-21 + 23u = 7(-2 + u) + -3
-21 + 23u = (-2 * 7 + u * 7) + -3
-21 + 23u = (-14 + 7u) + -3

Reorder the terms:
-21 + 23u = -14 + -3 + 7u

Combine like terms: -14 + -3 = -17
-21 + 23u = -17 + 7u

Solving
-21 + 23u = -17 + 7u

Solving for variable 'u'.

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

Add '-7u' to each side of the equation.
-21 + 23u + -7u = -17 + 7u + -7u

Combine like terms: 23u + -7u = 16u
-21 + 16u = -17 + 7u + -7u

Combine like terms: 7u + -7u = 0
-21 + 16u = -17 + 0
-21 + 16u = -17

Add '21' to each side of the equation.
-21 + 21 + 16u = -17 + 21

Combine like terms: -21 + 21 = 0
0 + 16u = -17 + 21
16u = -17 + 21

Combine like terms: -17 + 21 = 4
16u = 4

Divide each side by '16'.
u = 0.25

Simplifying
u = 0.25

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