2(u-7)=-30+21

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Solution for 2(u-7)=-30+21 equation: 


Simplifying
2(u + -7) = -30 + 21

Reorder the terms:
2(-7 + u) = -30 + 21
(-7 * 2 + u * 2) = -30 + 21
(-14 + 2u) = -30 + 21

Combine like terms: -30 + 21 = -9
-14 + 2u = -9

Solving
-14 + 2u = -9

Solving for variable 'u'.

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

Add '14' to each side of the equation.
-14 + 14 + 2u = -9 + 14

Combine like terms: -14 + 14 = 0
0 + 2u = -9 + 14
2u = -9 + 14

Combine like terms: -9 + 14 = 5
2u = 5

Divide each side by '2'.
u = 2.5

Simplifying
u = 2.5

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