Question

Błagam o pomoc daję naj!!!!!!!! W zadani jedenastym tam gdzie pomazane to u góry mam zrobione a u dołu: 3/4x ? =2/3

Answer 1

Zad 11
1/2*x=13/7
x=13/7:1/2
x=13/7*2/1
x=26/7=3 5/7

x*8/5=2/5
x=2/5:8/5
x=2/5*5/8
x=2/8=1/4

x*6/5=2
x=2:6/5
x=2*5/6
x=5/3=1 2/3

x*3/2=2/3
x=2/3:3/2
x=2/3*2/3
x=4/9

zad12
1 1/4*0,8=1*1/3=1/3*1,5=1/2*4,8=2 2/5

5/4*8/10=4o/40=1
1/3*15/10=15/30=1/2
1/2*48/10=48/20=24/10=12/5=2 2/5

1/13*39/100=3/100*40=6/5*3=18/5*2/3=2 2/5

1/13*39/100=1/1*3/100=3/100
3/100*40=3/5*2=6/5
6/5*3=18/5
18/5*2/3=6/5*2/1=12/5=2 2/5

2 1/5*2 3/22=47/10*2/47=1/5*2,625=21/40*4 4/7=2 2/5

11/5*47/22=1/5*47/2=47/10
47/10*2/47=1/5
1/5*2,625=1/5*21/8=21/40
21/40*32/7=3/10*8/1=24/10=2 4/10=2 2/5

zad8
143*18=2574
6,8*12,8=87,04
1,4*20,7=28,98
58,694-56,12=2,574
0,858*3=2,574
0,0052*65000=338
256*0,34=87,04
2,8*3,8=10,64
2*13 do2=338
14,3*0,18=2,574
0,054*0,062=0,003368
0,00429*600=2,574
286*0,009=2,574
130*2,6=338
61,87+25,17=87,04
1030*0,0006=0,618