(3x-5)+(x+15)=y

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Solution for (3x-5)+(x+15)=y equation: 


Simplifying
(3x + -5) + (x + 15) = y

Reorder the terms:
(-5 + 3x) + (x + 15) = y

Remove parenthesis around (-5 + 3x)
-5 + 3x + (x + 15) = y

Reorder the terms:
-5 + 3x + (15 + x) = y

Remove parenthesis around (15 + x)
-5 + 3x + 15 + x = y

Reorder the terms:
-5 + 15 + 3x + x = y

Combine like terms: -5 + 15 = 10
10 + 3x + x = y

Combine like terms: 3x + x = 4x
10 + 4x = y

Solving
10 + 4x = y

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 4x = -10 + y

Combine like terms: 10 + -10 = 0
0 + 4x = -10 + y
4x = -10 + y

Divide each side by '4'.
x = -2.5 + 0.25y

Simplifying
x = -2.5 + 0.25y

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