A+18=5a+2a

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Solution for A+18=5a+2a equation: 


Simplifying
A + 18 = 5a + 2a

Reorder the terms:
18 + A = 5a + 2a

Combine like terms: 5a + 2a = 7a
18 + A = 7a

Solving
18 + A = 7a

Solving for variable 'A'.

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

Add '-18' to each side of the equation.
18 + -18 + A = -18 + 7a

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

Simplifying
A = -18 + 7a

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