42=a+25

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Solution for 42=a+25 equation:


Simplifying
42 = a + 25

Reorder the terms:
42 = 25 + a

Solving
42 = 25 + 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.
42 + -1a = 25 + a + -1a

Combine like terms: a + -1a = 0
42 + -1a = 25 + 0
42 + -1a = 25

Add '-42' to each side of the equation.
42 + -42 + -1a = 25 + -42

Combine like terms: 42 + -42 = 0
0 + -1a = 25 + -42
-1a = 25 + -42

Combine like terms: 25 + -42 = -17
-1a = -17

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

Simplifying
a = 17

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