30=a+13

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Solution for 30=a+13 equation:


Simplifying
30 = a + 13

Reorder the terms:
30 = 13 + a

Solving
30 = 13 + 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.
30 + -1a = 13 + a + -1a

Combine like terms: a + -1a = 0
30 + -1a = 13 + 0
30 + -1a = 13

Add '-30' to each side of the equation.
30 + -30 + -1a = 13 + -30

Combine like terms: 30 + -30 = 0
0 + -1a = 13 + -30
-1a = 13 + -30

Combine like terms: 13 + -30 = -17
-1a = -17

Divide each side by '-1'.
a = 17

Simplifying
a = 17

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