2l+2(l-9)=66

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Solution for 2l+2(l-9)=66 equation:


Simplifying
2l + 2(l + -9) = 66

Reorder the terms:
2l + 2(-9 + l) = 66
2l + (-9 * 2 + l * 2) = 66
2l + (-18 + 2l) = 66

Reorder the terms:
-18 + 2l + 2l = 66

Combine like terms: 2l + 2l = 4l
-18 + 4l = 66

Solving
-18 + 4l = 66

Solving for variable 'l'.

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

Add '18' to each side of the equation.
-18 + 18 + 4l = 66 + 18

Combine like terms: -18 + 18 = 0
0 + 4l = 66 + 18
4l = 66 + 18

Combine like terms: 66 + 18 = 84
4l = 84

Divide each side by '4'.
l = 21

Simplifying
l = 21

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