40=2l+2*9

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Solution for 40=2l+2*9 equation:


Simplifying
40 = 2l + 2 * 9

Multiply 2 * 9
40 = 2l + 18

Reorder the terms:
40 = 18 + 2l

Solving
40 = 18 + 2l

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 = 18 + 2l + -2l

Combine like terms: 2l + -2l = 0
40 + -2l = 18 + 0
40 + -2l = 18

Add '-40' to each side of the equation.
40 + -40 + -2l = 18 + -40

Combine like terms: 40 + -40 = 0
0 + -2l = 18 + -40
-2l = 18 + -40

Combine like terms: 18 + -40 = -22
-2l = -22

Divide each side by '-2'.
l = 11

Simplifying
l = 11

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