Question

1. -3/7*(-7/4)
2. -2(1/3)+4(3/5)
3. (3/12)/(-4/65)
4. -8/14+(-2/57)

Answer 1

Answer:

1. -3/4

2. 26/15

3. -654. -242/399

Step-by-step explanation:

$1. \: \frac{3}{7} *( \frac{ - 7}{4} ) \\ \\ \implies \frac{3 * ( - 7)}{7 * 4} \\ \\ \implies \frac{ - 21}{28} \\ \\ \boxed{ \sf Answer : \frac{ - 3}{4} }$

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$2. \: - 2( \frac{1}{3} ) + 4( \frac{3}{5} ) \\ \\ \implies \frac{ - 2}{3} + \frac{12}{5} \\ \\ \implies \frac{ - 10 + 36}{15} \\ \\ \boxed{ \sf Answer : \frac{26}{15} }$

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$3. \: \frac{3}{12} \div ( \frac{ - 4}{65} ) \\ \\ \implies \frac{3}{12} * ( - \frac{65}{4} ) \\ \\ \implies \frac{1}{4}* (- \frac{65}{4}) \\ \\ \boxed{ \sf Answer: - \frac{65}{16}}$

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$4. \: - \frac{8}{14} + ( - \frac{2}{57} ) \\ \\ \implies \frac{ - 456 - 28}{798} \\ \\ \implies \frac{ - 484}{798} \\ \\ \boxed{ \sf Answer: \frac{ - 242}{399} }$