3L+3(L-7)=129

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Solution for 3L+3(L-7)=129 equation:


Simplifying
3L + 3(L + -7) = 129

Reorder the terms:
3L + 3(-7 + L) = 129
3L + (-7 * 3 + L * 3) = 129
3L + (-21 + 3L) = 129

Reorder the terms:
-21 + 3L + 3L = 129

Combine like terms: 3L + 3L = 6L
-21 + 6L = 129

Solving
-21 + 6L = 129

Solving for variable 'L'.

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

Add '21' to each side of the equation.
-21 + 21 + 6L = 129 + 21

Combine like terms: -21 + 21 = 0
0 + 6L = 129 + 21
6L = 129 + 21

Combine like terms: 129 + 21 = 150
6L = 150

Divide each side by '6'.
L = 25

Simplifying
L = 25

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