7u-20=3(u+4)

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Solution for 7u-20=3(u+4) equation:


Simplifying
7u + -20 = 3(u + 4)

Reorder the terms:
-20 + 7u = 3(u + 4)

Reorder the terms:
-20 + 7u = 3(4 + u)
-20 + 7u = (4 * 3 + u * 3)
-20 + 7u = (12 + 3u)

Solving
-20 + 7u = 12 + 3u

Solving for variable 'u'.

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

Add '-3u' to each side of the equation.
-20 + 7u + -3u = 12 + 3u + -3u

Combine like terms: 7u + -3u = 4u
-20 + 4u = 12 + 3u + -3u

Combine like terms: 3u + -3u = 0
-20 + 4u = 12 + 0
-20 + 4u = 12

Add '20' to each side of the equation.
-20 + 20 + 4u = 12 + 20

Combine like terms: -20 + 20 = 0
0 + 4u = 12 + 20
4u = 12 + 20

Combine like terms: 12 + 20 = 32
4u = 32

Divide each side by '4'.
u = 8

Simplifying
u = 8

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