40=2l+w+4

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Solution for 40=2l+w+4 equation: 


Simplifying
40 = 2l + w + 4

Reorder the terms:
40 = 4 + 2l + w

Solving
40 = 4 + 2l + w

Solving for variable 'l'.

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

Add '-2l' to each side of the equation.
40 + -2l = 4 + 2l + -2l + w

Combine like terms: 2l + -2l = 0
40 + -2l = 4 + 0 + w
40 + -2l = 4 + w

Add '-40' to each side of the equation.
40 + -40 + -2l = 4 + -40 + w

Combine like terms: 40 + -40 = 0
0 + -2l = 4 + -40 + w
-2l = 4 + -40 + w

Combine like terms: 4 + -40 = -36
-2l = -36 + w

Divide each side by '-2'.
l = 18 + -0.5w

Simplifying
l = 18 + -0.5w

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