25=a-(3)

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Solution for 25=a-(3) equation:


Simplifying
25 = a + -1(3)

Multiply -1 * 3
25 = a + -3

Reorder the terms:
25 = -3 + a

Solving
25 = -3 + 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.
25 + -1a = -3 + a + -1a

Combine like terms: a + -1a = 0
25 + -1a = -3 + 0
25 + -1a = -3

Add '-25' to each side of the equation.
25 + -25 + -1a = -3 + -25

Combine like terms: 25 + -25 = 0
0 + -1a = -3 + -25
-1a = -3 + -25

Combine like terms: -3 + -25 = -28
-1a = -28

Divide each side by '-1'.
a = 28

Simplifying
a = 28

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