-9(4-7)=4u+18

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Solution for -9(4-7)=4u+18 equation: 


Simplifying
-9(4 + -7) = 4u + 18

Combine like terms: 4 + -7 = -3
-9(-3) = 4u + 18

Multiply -9 * -3
27 = 4u + 18

Reorder the terms:
27 = 18 + 4u

Solving
27 = 18 + 4u

Solving for variable 'u'.

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

Add '-4u' to each side of the equation.
27 + -4u = 18 + 4u + -4u

Combine like terms: 4u + -4u = 0
27 + -4u = 18 + 0
27 + -4u = 18

Add '-27' to each side of the equation.
27 + -27 + -4u = 18 + -27

Combine like terms: 27 + -27 = 0
0 + -4u = 18 + -27
-4u = 18 + -27

Combine like terms: 18 + -27 = -9
-4u = -9

Divide each side by '-4'.
u = 2.25

Simplifying
u = 2.25

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