2y-r+15=55-r

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Solution for 2y-r+15=55-r equation:


Simplifying
2y + -1r + 15 = 55 + -1r

Reorder the terms:
15 + -1r + 2y = 55 + -1r

Add 'r' to each side of the equation.
15 + -1r + r + 2y = 55 + -1r + r

Combine like terms: -1r + r = 0
15 + 0 + 2y = 55 + -1r + r
15 + 2y = 55 + -1r + r

Combine like terms: -1r + r = 0
15 + 2y = 55 + 0
15 + 2y = 55

Solving
15 + 2y = 55

Solving for variable 'y'.

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

Add '-15' to each side of the equation.
15 + -15 + 2y = 55 + -15

Combine like terms: 15 + -15 = 0
0 + 2y = 55 + -15
2y = 55 + -15

Combine like terms: 55 + -15 = 40
2y = 40

Divide each side by '2'.
y = 20

Simplifying
y = 20

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