11*a=18*a+21

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Solution for 11*a=18*a+21 equation: 


Simplifying
11a = 18a + 21

Reorder the terms:
11a = 21 + 18a

Solving
11a = 21 + 18a

Solving for variable 'a'.

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

Add '-18a' to each side of the equation.
11a + -18a = 21 + 18a + -18a

Combine like terms: 11a + -18a = -7a
-7a = 21 + 18a + -18a

Combine like terms: 18a + -18a = 0
-7a = 21 + 0
-7a = 21

Divide each side by '-7'.
a = -3

Simplifying
a = -3

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