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

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


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

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

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

Combine like terms: 5u + 5u = 10u
-20 = 20 + 10u

Solving
-20 = 20 + 10u

Solving for variable 'u'.

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

Add '-10u' to each side of the equation.
-20 + -10u = 20 + 10u + -10u

Combine like terms: 10u + -10u = 0
-20 + -10u = 20 + 0
-20 + -10u = 20

Add '20' to each side of the equation.
-20 + 20 + -10u = 20 + 20

Combine like terms: -20 + 20 = 0
0 + -10u = 20 + 20
-10u = 20 + 20

Combine like terms: 20 + 20 = 40
-10u = 40

Divide each side by '-10'.
u = -4

Simplifying
u = -4

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