27=a-18

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Solution for 27=a-18 equation:


Simplifying
27 = a + -18

Reorder the terms:
27 = -18 + a

Solving
27 = -18 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
27 + -1a = -18 + a + -1a

Combine like terms: a + -1a = 0
27 + -1a = -18 + 0
27 + -1a = -18

Add '-27' to each side of the equation.
27 + -27 + -1a = -18 + -27

Combine like terms: 27 + -27 = 0
0 + -1a = -18 + -27
-1a = -18 + -27

Combine like terms: -18 + -27 = -45
-1a = -45

Divide each side by '-1'.
a = 45

Simplifying
a = 45

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