40=4u+12

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Solution for 40=4u+12 equation:


Simplifying
40 = 4u + 12

Reorder the terms:
40 = 12 + 4u

Solving
40 = 12 + 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.
40 + -4u = 12 + 4u + -4u

Combine like terms: 4u + -4u = 0
40 + -4u = 12 + 0
40 + -4u = 12

Add '-40' to each side of the equation.
40 + -40 + -4u = 12 + -40

Combine like terms: 40 + -40 = 0
0 + -4u = 12 + -40
-4u = 12 + -40

Combine like terms: 12 + -40 = -28
-4u = -28

Divide each side by '-4'.
u = 7

Simplifying
u = 7

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