78=2l+2w

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Solution for 78=2l+2w equation:


Simplifying
78 = 2l + 2w

Solving
78 = 2l + 2w

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.
78 + -2l = 2l + -2l + 2w

Combine like terms: 2l + -2l = 0
78 + -2l = 0 + 2w
78 + -2l = 2w

Add '-78' to each side of the equation.
78 + -78 + -2l = -78 + 2w

Combine like terms: 78 + -78 = 0
0 + -2l = -78 + 2w
-2l = -78 + 2w

Divide each side by '-2'.
l = 39 + -1w

Simplifying
l = 39 + -1w

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