Question

3/5·-2/7=
-4/9·-7/3=

Answer 1

Buenos días.

$\frac{4}{9}- \frac{7}{3} = \frac{12-63}{27} = \frac{-51}{27}= -1.888.$

$\frac{3}{5}- \frac{2}{7} = \frac{21-10}{35} = \frac{10}{35}= 0.285.$

Answer 2

Soluciones:

3/5 - 2/7 = [(3 ×  7) - (2 × 5)]/(5 × 7) = [21 - 10]/35 = 11/35

-4/9 - 7/3 = [(-4 × 3) - (7 × 9)]/(9 × 3) = [-12 - 63]/27 = -75/27 = -25/9