(L-21)+(l-48)=168

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Solution for (L-21)+(l-48)=168 equation: 


Simplifying
(L + -21) + (l + -48) = 168

Reorder the terms:
(-21 + L) + (l + -48) = 168

Remove parenthesis around (-21 + L)
-21 + L + (l + -48) = 168

Reorder the terms:
-21 + L + (-48 + l) = 168

Remove parenthesis around (-48 + l)
-21 + L + -48 + l = 168

Reorder the terms:
-21 + -48 + L + l = 168

Combine like terms: -21 + -48 = -69
-69 + L + l = 168

Solving
-69 + L + l = 168

Solving for variable 'L'.

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

Add '69' to each side of the equation.
-69 + L + 69 + l = 168 + 69

Reorder the terms:
-69 + 69 + L + l = 168 + 69

Combine like terms: -69 + 69 = 0
0 + L + l = 168 + 69
L + l = 168 + 69

Combine like terms: 168 + 69 = 237
L + l = 237

Add '-1l' to each side of the equation.
L + l + -1l = 237 + -1l

Combine like terms: l + -1l = 0
L + 0 = 237 + -1l
L = 237 + -1l

Simplifying
L = 237 + -1l

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