\{ ( 2 y - 0.3 ) = 19.4 - y
Solve for y
y = \frac{197}{30} = 6\frac{17}{30} \approx 6.566666667
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2y-0.3+y=19.4
Add y to both sides.
3y-0.3=19.4
Combine 2y and y to get 3y.
3y=19.4+0.3
Add 0.3 to both sides.
3y=19.7
Add 19.4 and 0.3 to get 19.7.
y=\frac{19.7}{3}
Divide both sides by 3.
y=\frac{197}{30}
Expand \frac{19.7}{3} by multiplying both numerator and the denominator by 10.
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