Solve for x
x=\frac{y}{19}
Solve for y
y=19x
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2x+1y-21x=0
Subtract 21x from both sides.
-19x+1y=0
Combine 2x and -21x to get -19x.
-19x=-y
Subtract 1y from both sides. Anything subtracted from zero gives its negation.
\frac{-19x}{-19}=-\frac{y}{-19}
Divide both sides by -19.
x=-\frac{y}{-19}
Dividing by -19 undoes the multiplication by -19.
x=\frac{y}{19}
Divide -y by -19.
1y=21x-2x
Subtract 2x from both sides.
1y=19x
Combine 21x and -2x to get 19x.
y=19x
Reorder the terms.
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