161=100-y

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Solution for 161=100-y equation:


Simplifying
161 = 100 + -1y

Solving
161 = 100 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
161 + y = 100 + -1y + y

Combine like terms: -1y + y = 0
161 + y = 100 + 0
161 + y = 100

Add '-161' to each side of the equation.
161 + -161 + y = 100 + -161

Combine like terms: 161 + -161 = 0
0 + y = 100 + -161
y = 100 + -161

Combine like terms: 100 + -161 = -61
y = -61

Simplifying
y = -61

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