1-7=y-9

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Solution for 1-7=y-9 equation:


Simplifying
1 + -7 = y + -9

Combine like terms: 1 + -7 = -6
-6 = y + -9

Reorder the terms:
-6 = -9 + y

Solving
-6 = -9 + 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.
-6 + -1y = -9 + y + -1y

Combine like terms: y + -1y = 0
-6 + -1y = -9 + 0
-6 + -1y = -9

Add '6' to each side of the equation.
-6 + 6 + -1y = -9 + 6

Combine like terms: -6 + 6 = 0
0 + -1y = -9 + 6
-1y = -9 + 6

Combine like terms: -9 + 6 = -3
-1y = -3

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

Simplifying
y = 3

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