-7(u-3)=2u+3

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Solution for -7(u-3)=2u+3 equation:


Simplifying
-7(u + -3) = 2u + 3

Reorder the terms:
-7(-3 + u) = 2u + 3
(-3 * -7 + u * -7) = 2u + 3
(21 + -7u) = 2u + 3

Reorder the terms:
21 + -7u = 3 + 2u

Solving
21 + -7u = 3 + 2u

Solving for variable 'u'.

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

Add '-2u' to each side of the equation.
21 + -7u + -2u = 3 + 2u + -2u

Combine like terms: -7u + -2u = -9u
21 + -9u = 3 + 2u + -2u

Combine like terms: 2u + -2u = 0
21 + -9u = 3 + 0
21 + -9u = 3

Add '-21' to each side of the equation.
21 + -21 + -9u = 3 + -21

Combine like terms: 21 + -21 = 0
0 + -9u = 3 + -21
-9u = 3 + -21

Combine like terms: 3 + -21 = -18
-9u = -18

Divide each side by '-9'.
u = 2

Simplifying
u = 2

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