7(L-3)=21

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Solution for 7(L-3)=21 equation: 


Simplifying
7(L + -3) = 21

Reorder the terms:
7(-3 + L) = 21
(-3 * 7 + L * 7) = 21
(-21 + 7L) = 21

Solving
-21 + 7L = 21

Solving for variable 'L'.

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

Add '21' to each side of the equation.
-21 + 21 + 7L = 21 + 21

Combine like terms: -21 + 21 = 0
0 + 7L = 21 + 21
7L = 21 + 21

Combine like terms: 21 + 21 = 42
7L = 42

Divide each side by '7'.
L = 6

Simplifying
L = 6

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