Question

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Answer 1

Answer:

(-5×12/20) - (-3×7/9)

= (-12/4) - (-7/3)

= (-3) - (-7/3)

= -3+7/3

= -9+7/3

= -2/3

= -3/2

Answer 2

$( - 5 \times \frac{12}{20} ) - ( - 3 \times \frac{7}{9} ) \\ ( - 1 \times \frac{3}{1} ) - ( - 1 \times \frac{7}{3} ) \\ ( - 3) - ( \frac{ - 7}{3} ) \\ - \frac{3}{1 } + \frac{7}3{} \\ - 9 + 7 \\ 3 \\ \frac{ - 2}{3}$the reciprocal of -2/3=-3/2