The sum of the rational numbers − 8 19 and − 4 57 is _____. Options: A . &nbsp−2857 B . &nbsp−1257 C . &nbsp−4247 D . &nbsp−3247

Answer: Option A : A − 8 19 + − 4 57 = ( − 8 × 3 ) ( 19 × 3 ) + − 4 57 = − 24 57 + − 4 57 = − 28 57

The sum of the rational numbers −819 and −457 is ____

Question

The sum of the rational numbers

\frac{- 8}{19}

and

\frac{- 4}{57}

is _____.

Options:

A . −2857

B . −1257

C . −4247

D . −3247

Answer: Option A
:
A

\frac{- 8}{19} + \frac{- 4}{57} = \frac{(- 8 \times 3)}{(19 \times 3)} + \frac{- 4}{57}

= \frac{- 24}{57} + \frac{- 4}{57}

= \frac{- 28}{57}

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