5u-7=-8(u+9)

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Solution for 5u-7=-8(u+9) equation:


Simplifying
5u + -7 = -8(u + 9)

Reorder the terms:
-7 + 5u = -8(u + 9)

Reorder the terms:
-7 + 5u = -8(9 + u)
-7 + 5u = (9 * -8 + u * -8)
-7 + 5u = (-72 + -8u)

Solving
-7 + 5u = -72 + -8u

Solving for variable 'u'.

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

Add '8u' to each side of the equation.
-7 + 5u + 8u = -72 + -8u + 8u

Combine like terms: 5u + 8u = 13u
-7 + 13u = -72 + -8u + 8u

Combine like terms: -8u + 8u = 0
-7 + 13u = -72 + 0
-7 + 13u = -72

Add '7' to each side of the equation.
-7 + 7 + 13u = -72 + 7

Combine like terms: -7 + 7 = 0
0 + 13u = -72 + 7
13u = -72 + 7

Combine like terms: -72 + 7 = -65
13u = -65

Divide each side by '13'.
u = -5

Simplifying
u = -5

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