Question

(2/15+y)-7/30=1/10
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Answer 1

$( frac{2}{15} + y) - frac{7}{30} = 0.1 \ frac{2}{15} + y - frac{7}{30} = 0.1 \ - frac{1}{10} + y = 0.1 \ y = 0.1 + frac{1}{10} \ y = frac{1}{10} + frac{1}{10} \ y = frac{1}{5} = 0.2$