Solve the following equation
l+50+l=180
Solve for l
l + 50 + l = 180
(1 + 1)l = 2l
2l + 50 = + 180
Group our constants 50 and 180. subtract 50 from both sides
2l + 50 - 50 = 180 - 50
2l = 130
l = 65
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