Question

(0,39-1,326: 1,3)*2 1/12+1/4 решите

Answer 1

$(0.39 - 1.326 \div 1.3) \times 2 \frac{1}{12} + \frac{1}{4} = (0.39 - 1.02) \times \frac{25}{12} + \frac{1}{4} = - 0.63 \times \frac{25}{12} + \frac{1}{4} = - \frac{63}{100} \times \frac{25}{12} + \frac{1}{4} = - \frac{21 \times 1}{4 \times 4} = - \frac{21}{16} + \frac{1}{4} = - \frac{21}{16} + \frac{4}{16} = - \frac{17}{16} = - 1 \frac{1}{16}$

Answer 2

1)1,326:1,3=1,02
2)0,39-1,02=-0,63
3)-0,63*25/12=-1,3125
4)-1,3125+1/4=-1,3125+0,25=-1,0625

ответ: -1,0625