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

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


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

Reorder the terms:
-7u + 4(-3 + u) = 9
-7u + (-3 * 4 + u * 4) = 9
-7u + (-12 + 4u) = 9

Reorder the terms:
-12 + -7u + 4u = 9

Combine like terms: -7u + 4u = -3u
-12 + -3u = 9

Solving
-12 + -3u = 9

Solving for variable 'u'.

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

Add '12' to each side of the equation.
-12 + 12 + -3u = 9 + 12

Combine like terms: -12 + 12 = 0
0 + -3u = 9 + 12
-3u = 9 + 12

Combine like terms: 9 + 12 = 21
-3u = 21

Divide each side by '-3'.
u = -7

Simplifying
u = -7

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