3l+7=l-9

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Solution for 3l+7=l-9 equation:


Simplifying
3l + 7 = l + -9

Reorder the terms:
7 + 3l = l + -9

Reorder the terms:
7 + 3l = -9 + l

Solving
7 + 3l = -9 + 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.
7 + 3l + -1l = -9 + l + -1l

Combine like terms: 3l + -1l = 2l
7 + 2l = -9 + l + -1l

Combine like terms: l + -1l = 0
7 + 2l = -9 + 0
7 + 2l = -9

Add '-7' to each side of the equation.
7 + -7 + 2l = -9 + -7

Combine like terms: 7 + -7 = 0
0 + 2l = -9 + -7
2l = -9 + -7

Combine like terms: -9 + -7 = -16
2l = -16

Divide each side by '2'.
l = -8

Simplifying
l = -8

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