15=a-(-10)

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Solution for 15=a-(-10) equation:


Simplifying
15 = a + -1(-10)

Multiply -1 * -10
15 = a + 10

Reorder the terms:
15 = 10 + a

Solving
15 = 10 + 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.
15 + -1a = 10 + a + -1a

Combine like terms: a + -1a = 0
15 + -1a = 10 + 0
15 + -1a = 10

Add '-15' to each side of the equation.
15 + -15 + -1a = 10 + -15

Combine like terms: 15 + -15 = 0
0 + -1a = 10 + -15
-1a = 10 + -15

Combine like terms: 10 + -15 = -5
-1a = -5

Divide each side by '-1'.
a = 5

Simplifying
a = 5

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