-20u+36=-15u-21

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Solution for -20u+36=-15u-21 equation: 


Simplifying
-20u + 36 = -15u + -21

Reorder the terms:
36 + -20u = -15u + -21

Reorder the terms:
36 + -20u = -21 + -15u

Solving
36 + -20u = -21 + -15u

Solving for variable 'u'.

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

Add '15u' to each side of the equation.
36 + -20u + 15u = -21 + -15u + 15u

Combine like terms: -20u + 15u = -5u
36 + -5u = -21 + -15u + 15u

Combine like terms: -15u + 15u = 0
36 + -5u = -21 + 0
36 + -5u = -21

Add '-36' to each side of the equation.
36 + -36 + -5u = -21 + -36

Combine like terms: 36 + -36 = 0
0 + -5u = -21 + -36
-5u = -21 + -36

Combine like terms: -21 + -36 = -57
-5u = -57

Divide each side by '-5'.
u = 11.4

Simplifying
u = 11.4

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