(12+l)+l=72

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Solution for (12+l)+l=72 equation:


Simplifying
(12 + l) + l = 72

Remove parenthesis around (12 + l)
12 + l + l = 72

Combine like terms: l + l = 2l
12 + 2l = 72

Solving
12 + 2l = 72

Solving for variable 'l'.

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

Add '-12' to each side of the equation.
12 + -12 + 2l = 72 + -12

Combine like terms: 12 + -12 = 0
0 + 2l = 72 + -12
2l = 72 + -12

Combine like terms: 72 + -12 = 60
2l = 60

Divide each side by '2'.
l = 30

Simplifying
l = 30

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