Question

What number should be added to -3/5 to get 2/3 ?​

Answer 1

$let \: the \: other \: number \: be \: x \\ x + ( \frac{ - 3}{5} ) = \frac{2}{3} \\ x - \frac{3}{5} = \frac{2}{3} \\ \frac{5x - 3}{5} = \frac{2}{3} \\ 5x - 3 = \frac{2}{3} \times 5 \\ 5x - 3 = \frac{10}{3} \\ 5x = \frac{10}{3} + 3 \\ 5x = \frac{10 + 9}{3} \\ 5x = \frac{19}{3} \\ x = \frac{19}{3 \times 5} \\ x = \frac{19}{15}$

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