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

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


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

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

Combine like terms: 7u + 7u = 14u
-7 = -21 + 14u

Solving
-7 = -21 + 14u

Solving for variable 'u'.

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

Add '-14u' to each side of the equation.
-7 + -14u = -21 + 14u + -14u

Combine like terms: 14u + -14u = 0
-7 + -14u = -21 + 0
-7 + -14u = -21

Add '7' to each side of the equation.
-7 + 7 + -14u = -21 + 7

Combine like terms: -7 + 7 = 0
0 + -14u = -21 + 7
-14u = -21 + 7

Combine like terms: -21 + 7 = -14
-14u = -14

Divide each side by '-14'.
u = 1

Simplifying
u = 1

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