15-L=L+4

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Solution for 15-L=L+4 equation:


Simplifying
15 + -1L = L + 4

Reorder the terms:
15 + -1L = 4 + L

Solving
15 + -1L = 4 + L

Solving for variable 'L'.

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

Add '-1L' to each side of the equation.
15 + -1L + -1L = 4 + L + -1L

Combine like terms: -1L + -1L = -2L
15 + -2L = 4 + L + -1L

Combine like terms: L + -1L = 0
15 + -2L = 4 + 0
15 + -2L = 4

Add '-15' to each side of the equation.
15 + -15 + -2L = 4 + -15

Combine like terms: 15 + -15 = 0
0 + -2L = 4 + -15
-2L = 4 + -15

Combine like terms: 4 + -15 = -11
-2L = -11

Divide each side by '-2'.
L = 5.5

Simplifying
L = 5.5

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