(240+-1y)+a=215

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Solution for (240+-1y)+a=215 equation:


Simplifying
(240 + -1y) + a = 215

Remove parenthesis around (240 + -1y)
240 + -1y + a = 215

Reorder the terms:
240 + a + -1y = 215

Solving
240 + a + -1y = 215

Solving for variable 'a'.

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

Add '-240' to each side of the equation.
240 + a + -240 + -1y = 215 + -240

Reorder the terms:
240 + -240 + a + -1y = 215 + -240

Combine like terms: 240 + -240 = 0
0 + a + -1y = 215 + -240
a + -1y = 215 + -240

Combine like terms: 215 + -240 = -25
a + -1y = -25

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

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

Simplifying
a = -25 + y

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