Question

1
$\frac{1}{3} \times 6 + \frac{4}{3} \times \frac{21}{28} + 3 \frac{1}{2} \times 7 \frac{3}{5 } =$
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Answer 1

Răspuns:

Explicație pas cu pas:

2+7/4+7/2·28/5=2+7/4+7·14/5=2+7(5/20+4·7/20)=

=2+7·33/20=(40+231)/20=251/20=12 11/20