Question

Вычислить 1,2x-2y=
При том x= 1/3 дробь , y=0,3

Answer 1

Ответ:

$1.2 \times \frac{1}{3} - 2 \times 0.3 = 1\frac{2}{10} \times \frac{1}{3} - 0.6 = \frac{12 \times 1}{10 \times 3} - 0.6 = \frac{4}{10} - 0.6 = 0.4 - 0.6 = - 0.2$