-7u-9=-5(u+1)

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Solution for -7u-9=-5(u+1) equation:


Simplifying
-7u + -9 = -5(u + 1)

Reorder the terms:
-9 + -7u = -5(u + 1)

Reorder the terms:
-9 + -7u = -5(1 + u)
-9 + -7u = (1 * -5 + u * -5)
-9 + -7u = (-5 + -5u)

Solving
-9 + -7u = -5 + -5u

Solving for variable 'u'.

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

Add '5u' to each side of the equation.
-9 + -7u + 5u = -5 + -5u + 5u

Combine like terms: -7u + 5u = -2u
-9 + -2u = -5 + -5u + 5u

Combine like terms: -5u + 5u = 0
-9 + -2u = -5 + 0
-9 + -2u = -5

Add '9' to each side of the equation.
-9 + 9 + -2u = -5 + 9

Combine like terms: -9 + 9 = 0
0 + -2u = -5 + 9
-2u = -5 + 9

Combine like terms: -5 + 9 = 4
-2u = 4

Divide each side by '-2'.
u = -2

Simplifying
u = -2

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