27=13-7a

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Solution for 27=13-7a equation:


Simplifying
27 = 13 + -7a

Solving
27 = 13 + -7a

Solving for variable 'a'.

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

Add '7a' to each side of the equation.
27 + 7a = 13 + -7a + 7a

Combine like terms: -7a + 7a = 0
27 + 7a = 13 + 0
27 + 7a = 13

Add '-27' to each side of the equation.
27 + -27 + 7a = 13 + -27

Combine like terms: 27 + -27 = 0
0 + 7a = 13 + -27
7a = 13 + -27

Combine like terms: 13 + -27 = -14
7a = -14

Divide each side by '7'.
a = -2

Simplifying
a = -2

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