2(L+W)=840

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Solution for 2(L+W)=840 equation: 


Simplifying
2(L + W) = 840
(L * 2 + W * 2) = 840
(2L + 2W) = 840

Solving
2L + 2W = 840

Solving for variable 'L'.

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

Add '-2W' to each side of the equation.
2L + 2W + -2W = 840 + -2W

Combine like terms: 2W + -2W = 0
2L + 0 = 840 + -2W
2L = 840 + -2W

Divide each side by '2'.
L = 420 + -1W

Simplifying
L = 420 + -1W

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