A+13=3a+18

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Solution for A+13=3a+18 equation: 


Simplifying
A + 13 = 3a + 18

Reorder the terms:
13 + A = 3a + 18

Reorder the terms:
13 + A = 18 + 3a

Solving
13 + A = 18 + 3a

Solving for variable 'A'.

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

Add '-13' to each side of the equation.
13 + -13 + A = 18 + -13 + 3a

Combine like terms: 13 + -13 = 0
0 + A = 18 + -13 + 3a
A = 18 + -13 + 3a

Combine like terms: 18 + -13 = 5
A = 5 + 3a

Simplifying
A = 5 + 3a

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