4(u-9)=5u-20-20

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Solution for 4(u-9)=5u-20-20 equation:


Simplifying
4(u + -9) = 5u + -20 + -20

Reorder the terms:
4(-9 + u) = 5u + -20 + -20
(-9 * 4 + u * 4) = 5u + -20 + -20
(-36 + 4u) = 5u + -20 + -20

Reorder the terms:
-36 + 4u = -20 + -20 + 5u

Combine like terms: -20 + -20 = -40
-36 + 4u = -40 + 5u

Solving
-36 + 4u = -40 + 5u

Solving for variable 'u'.

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

Add '-5u' to each side of the equation.
-36 + 4u + -5u = -40 + 5u + -5u

Combine like terms: 4u + -5u = -1u
-36 + -1u = -40 + 5u + -5u

Combine like terms: 5u + -5u = 0
-36 + -1u = -40 + 0
-36 + -1u = -40

Add '36' to each side of the equation.
-36 + 36 + -1u = -40 + 36

Combine like terms: -36 + 36 = 0
0 + -1u = -40 + 36
-1u = -40 + 36

Combine like terms: -40 + 36 = -4
-1u = -4

Divide each side by '-1'.
u = 4

Simplifying
u = 4

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