(3L-9)+(-7L+4)=15

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Solution for (3L-9)+(-7L+4)=15 equation:


Simplifying
(3L + -9) + (-7L + 4) = 15

Reorder the terms:
(-9 + 3L) + (-7L + 4) = 15

Remove parenthesis around (-9 + 3L)
-9 + 3L + (-7L + 4) = 15

Reorder the terms:
-9 + 3L + (4 + -7L) = 15

Remove parenthesis around (4 + -7L)
-9 + 3L + 4 + -7L = 15

Reorder the terms:
-9 + 4 + 3L + -7L = 15

Combine like terms: -9 + 4 = -5
-5 + 3L + -7L = 15

Combine like terms: 3L + -7L = -4L
-5 + -4L = 15

Solving
-5 + -4L = 15

Solving for variable 'L'.

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

Add '5' to each side of the equation.
-5 + 5 + -4L = 15 + 5

Combine like terms: -5 + 5 = 0
0 + -4L = 15 + 5
-4L = 15 + 5

Combine like terms: 15 + 5 = 20
-4L = 20

Divide each side by '-4'.
L = -5

Simplifying
L = -5

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