Question

va rog? urgenttttt??????????​

Answer 1

Răspuns:

Explicație pas cu pas:

1). 7/8=77/88

2). 12/16=6/8=3/4

3). 75/4=7x4+5=28+5=33

4). 3/11+4/11+5/11=12/11

5). 4/3-7/3=16/12-7/12=9/12=3/4

6). 4/5*5/2=2

7). 7/6:21/22=7/6*22/21=11/9

8). 4/7 din 21/36=4/7*21/36=3/9=1/3

9). 24% din 1500=24/100*1500=24*15=360

10).75/4=18 3/4

11). $\frac{3}{4} :(\frac{3}{4} -\frac{1}{2} )-\frac{4}{9} =\frac{3}{4} :(\frac{3}{4} -\frac{2}{4})-\frac{4}{9} =\frac{3}{4} :\frac{4}{1} -\frac{4}{9} =\frac{3}{1} -\frac{4}{9} =\frac{27}{9} -\frac{4}{9} =\frac{33}{9} =\frac{11}{3}$

12).

a). (7/3)^5*(7/3)^4:(7/3)^6=16807/243*2401/81:117649/729

=16807/243*2401/81*729/117649

=2401*2401/9*1/117649

=2401/9*49

=49/9

b). (5/13)^2*(26/15)^2:(2/5)^2

=25/169*676/225:4/25

=25/169*676/225*25/4

=25/9

13)200:100x10=20

200+20=220 lei