Solve for y
y=10
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y\times 0.2=4.2-2.2
Subtract 2.2 from both sides.
y\times 0.2=2
Subtract 2.2 from 4.2 to get 2.
y=\frac{2}{0.2}
Divide both sides by 0.2.
y=\frac{20}{2}
Expand \frac{2}{0.2} by multiplying both numerator and the denominator by 10.
y=10
Divide 20 by 2 to get 10.
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