Question

3)0,64:(-0,16):7/12:(-1/4):(-8/15):(- 1,1/5)

ДАЮ 100 БАЛОВ​

Answer 1

Пошаговое объяснение:

$1)0.64 \div - 0.16 = - 4$

$2) - 4 \div \frac{7}{12} = - \frac{48}{7} = - 6\frac{6}{7}$

$3) - 6 \frac{6}{7} \div - \frac{1}{4} = - \frac{48}{7} \div - \frac{1}{4} = \frac{48 \times 4}{7 \times 1}$

$= \frac{192}{7} = 27 \frac{3}{7}$

$4)27 \frac{3}{7} \div - \frac{8}{15} = \frac{192}{7} \div - \frac{8}{15}$

$= - \frac{192 \times 15}{7 \times 8} = - \frac{2880}{56} = - \frac{360 \times 8}{7 \times 8} = - 51 \frac{3}{7}$

$5) - 51 \frac{3}{7} \div - 1 \frac{1}{5} = - \frac{360}{7} \div - \frac{6}{5}$

$= \frac{360 \times 5}{7 \times 6} = \frac{1800}{42} = \frac{300 \times 6}{7 \times 6} = 42 \frac{6}{7}$

Answer 2

Ответ:

42 6/7

Пошаговое объяснение:

1) 0,64 : (-0,16) = -4

2) -4 : 7/12 = -4 * 12/7 = -48/7

3) -48/7 : (-1/4) = -48/7 * (-4/1) = 192/7

4) 192/7 : (-8/15) = 192/7 * (-15/8) = 24/7 * (-15/1) = -360/7

5) -360/7 : (-1 1/5) = -360/7 : (-6/5) = -360/7 * (-5/6) = -60/7 * (-5/1) = 300/7 = 42 6/7