3L+3(L-7)=141

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Solution for 3L+3(L-7)=141 equation: 


Simplifying
3L + 3(L + -7) = 141

Reorder the terms:
3L + 3(-7 + L) = 141
3L + (-7 * 3 + L * 3) = 141
3L + (-21 + 3L) = 141

Reorder the terms:
-21 + 3L + 3L = 141

Combine like terms: 3L + 3L = 6L
-21 + 6L = 141

Solving
-21 + 6L = 141

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 = 141 + 21

Combine like terms: -21 + 21 = 0
0 + 6L = 141 + 21
6L = 141 + 21

Combine like terms: 141 + 21 = 162
6L = 162

Divide each side by '6'.
L = 27

Simplifying
L = 27

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