2u+3(u-7)=-1

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Solution for 2u+3(u-7)=-1 equation:


Simplifying
2u + 3(u + -7) = -1

Reorder the terms:
2u + 3(-7 + u) = -1
2u + (-7 * 3 + u * 3) = -1
2u + (-21 + 3u) = -1

Reorder the terms:
-21 + 2u + 3u = -1

Combine like terms: 2u + 3u = 5u
-21 + 5u = -1

Solving
-21 + 5u = -1

Solving for variable 'u'.

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

Add '21' to each side of the equation.
-21 + 21 + 5u = -1 + 21

Combine like terms: -21 + 21 = 0
0 + 5u = -1 + 21
5u = -1 + 21

Combine like terms: -1 + 21 = 20
5u = 20

Divide each side by '5'.
u = 4

Simplifying
u = 4

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