Solve for y
y=\frac{28-x}{19}
Solve for x
x=28-19y
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19y=28-x
Subtract x from both sides.
\frac{19y}{19}=\frac{28-x}{19}
Divide both sides by 19.
y=\frac{28-x}{19}
Dividing by 19 undoes the multiplication by 19.
x=28-19y
Subtract 19y from both sides.
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