Question

фотка плиз помогите как можете​

Answer 1

Ответ:

1. 27 − 13 · (− 5) = -92

2. -13 · 6 + 53 = -25

3. 6 - 54 : 3 = -16

4. 8/15 · (7/8 + 11/16) = 5/6

5. 2 - 15/28 : 10/21 = 7/8

6. 13-69/42 : 56/6 · 7/4 = -1/4

7. (-7.6 + 1.9) : 1.9 = -3

8. (-4.7 + 8.9) : 8 = 0.5

9.-9.7 + 18.9 : 1.4 = 3.8

ВРОДЕ ТАК.)

Answer 2

№1

$27-13*(-5)=25+65=90$

№2

$-13*6+53=-78+53=-25$

№3

$6-54:3=6-18=-12$

№4

$\displaystyle\\\frac{8}{15} *(\frac{7}{8}+\frac{11}{16} )=\frac{8}{15} *(\frac{14}{16} +\frac{11}{16} )=\frac{8}{15} *\frac{25}{16}=\frac{1}{3} *\frac{5}{2}=\frac{5}{6}$

№5

$\displaystyle\\2-\frac{15}{28} :\frac{10}{21}=2-\frac{15}{28} *\frac{21}{10}=2-\frac{3}{4} *\frac{3}{2}=2-\frac{9}{8}=\frac{2}{1} -\frac{9}{8} =\frac{16}{8}-\frac{9}{8}=\frac{7}{8}$

№6

$\displaystyle\\\frac{13-69}{42} :\frac{56}{6} *\frac{7}{4}=-\frac{56}{42} *\frac{6}{56} *\frac{7}{4} =-\frac{1}{7} *\frac{1}{1} *\frac{7}{4}=-\frac{1}{7} *\frac{7}{4} =-\frac{1}{1} *\frac{1}{4} =-\frac{1}{4}$

№7

$(-7,6+1,9):1,9=-5,7:1,9=-3$

№8

$(-4,7+8,9):8=4,2:8=0,525$

№9

$-9,7+18,9:1,4=-9,7+13,5=3,8$