3(7u+1)=8u-5(u+3)

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Solution for 3(7u+1)=8u-5(u+3) equation:


Simplifying
3(7u + 1) = 8u + -5(u + 3)

Reorder the terms:
3(1 + 7u) = 8u + -5(u + 3)
(1 * 3 + 7u * 3) = 8u + -5(u + 3)
(3 + 21u) = 8u + -5(u + 3)

Reorder the terms:
3 + 21u = 8u + -5(3 + u)
3 + 21u = 8u + (3 * -5 + u * -5)
3 + 21u = 8u + (-15 + -5u)

Reorder the terms:
3 + 21u = -15 + 8u + -5u

Combine like terms: 8u + -5u = 3u
3 + 21u = -15 + 3u

Solving
3 + 21u = -15 + 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.
3 + 21u + -3u = -15 + 3u + -3u

Combine like terms: 21u + -3u = 18u
3 + 18u = -15 + 3u + -3u

Combine like terms: 3u + -3u = 0
3 + 18u = -15 + 0
3 + 18u = -15

Add '-3' to each side of the equation.
3 + -3 + 18u = -15 + -3

Combine like terms: 3 + -3 = 0
0 + 18u = -15 + -3
18u = -15 + -3

Combine like terms: -15 + -3 = -18
18u = -18

Divide each side by '18'.
u = -1

Simplifying
u = -1

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