54=15+17-7+y

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Solution for 54=15+17-7+y equation:


Simplifying
54 = 15 + 17 + -7 + y

Combine like terms: 15 + 17 = 32
54 = 32 + -7 + y

Combine like terms: 32 + -7 = 25
54 = 25 + y

Solving
54 = 25 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
54 + -1y = 25 + y + -1y

Combine like terms: y + -1y = 0
54 + -1y = 25 + 0
54 + -1y = 25

Add '-54' to each side of the equation.
54 + -54 + -1y = 25 + -54

Combine like terms: 54 + -54 = 0
0 + -1y = 25 + -54
-1y = 25 + -54

Combine like terms: 25 + -54 = -29
-1y = -29

Divide each side by '-1'.
y = 29

Simplifying
y = 29

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