18a-7+5a-5=57

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Solution for 18a-7+5a-5=57 equation:


Simplifying
18a + -7 + 5a + -5 = 57

Reorder the terms:
-7 + -5 + 18a + 5a = 57

Combine like terms: -7 + -5 = -12
-12 + 18a + 5a = 57

Combine like terms: 18a + 5a = 23a
-12 + 23a = 57

Solving
-12 + 23a = 57

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + 23a = 57 + 12

Combine like terms: -12 + 12 = 0
0 + 23a = 57 + 12
23a = 57 + 12

Combine like terms: 57 + 12 = 69
23a = 69

Divide each side by '23'.
a = 3

Simplifying
a = 3

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