4-16=a-15

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Solution for 4-16=a-15 equation:


Simplifying
4 + -16 = a + -15

Combine like terms: 4 + -16 = -12
-12 = a + -15

Reorder the terms:
-12 = -15 + a

Solving
-12 = -15 + 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.
-12 + -1a = -15 + a + -1a

Combine like terms: a + -1a = 0
-12 + -1a = -15 + 0
-12 + -1a = -15

Add '12' to each side of the equation.
-12 + 12 + -1a = -15 + 12

Combine like terms: -12 + 12 = 0
0 + -1a = -15 + 12
-1a = -15 + 12

Combine like terms: -15 + 12 = -3
-1a = -3

Divide each side by '-1'.
a = 3

Simplifying
a = 3

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