y=-2x-21

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Solution for y=-2x-21 equation: 


Simplifying
y = -2x + -21

Reorder the terms:
y = -21 + -2x

Solving
y = -21 + -2x

Solving for variable 'y'.

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

Simplifying
y = -21 + -2x

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