-18=7(u+6)+8u

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Solution for -18=7(u+6)+8u equation:


Simplifying
-18 = 7(u + 6) + 8u

Reorder the terms:
-18 = 7(6 + u) + 8u
-18 = (6 * 7 + u * 7) + 8u
-18 = (42 + 7u) + 8u

Combine like terms: 7u + 8u = 15u
-18 = 42 + 15u

Solving
-18 = 42 + 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.
-18 + -15u = 42 + 15u + -15u

Combine like terms: 15u + -15u = 0
-18 + -15u = 42 + 0
-18 + -15u = 42

Add '18' to each side of the equation.
-18 + 18 + -15u = 42 + 18

Combine like terms: -18 + 18 = 0
0 + -15u = 42 + 18
-15u = 42 + 18

Combine like terms: 42 + 18 = 60
-15u = 60

Divide each side by '-15'.
u = -4

Simplifying
u = -4

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