Question

Spunetimi 10 fractii cu scaderi si adunari cu numitori diferiti ! Si sa le rezolvati prin amplificare si simplificare !

Answer 1

x)= amplificat cu x         (x=simplificat cu x           x=nr natural
1/2+5/4=2)1/2+5/4=2/4+5/4=7/4
3/5+2/15=3)3/5+2/15=9/15+2/15=11/15
4/14+4/7=4/14+2)4/7=4/14+8/14=12/14(2=6/7
2/3+2/2=2)2/3+3)2/2=4/6+6/6=10/6(2=5/3
4/9+4/3=4/9+3)4/3=4/9+12/9=16/9

Answer 2

/=semn de fracţie sau supra
Adunări:
1. 5/6+6/36
amplifici 5/6 cu 6:
30/36+6/36=30+6/36=36/36=1
2. 2/7+8/28
amplifici 2/7 cu 4:
8/28+8+28=16/28
simplifici prin 4:
16/24=4/7
3. 5/3+7/9
amplifici 5/3 cu 3:
15/9+7/9=15+7/9=22/9
4. 5/9+3/81
amplifici cu 5/9 cu 9:
45/81+3/81=45+3/81=48/81
5. 3/8+9/64
amplifici 3/8 cu 8:
24/64+9/64=33/64
6. 2/7+30/70
simplifici 30/70 cu 10:
2/7+3/7=2+3/7=5/7
7. 7/3+81/27
simplifici  81/27 cu 9:
7/3+9/3=16/3
8. 9/6+15/30
simplifici 15/30 cu 5:
9/6+3/6=12/6
simplifici 12/6 cu 6: 12/6=2/1=2
9. 2/7+9/63
Simplifici 9/63 cu 9:
2/7+1/7=3/7
10. 14/11+24/88
Simplifici 24/88 prin 8:
14/11+3/11=17/11
Scăderi:
1. 6/3-5/9
Amplifici 6/3 cu 3:
18/9-5/9=18-5/9=13/9
2. 14/25-50/125
Simplifici 50/125 cu 25:
14/5-2/5=14-2/5=12/5
3. 8/7-2/49
Amplifici 8/7 cu 7:
56/49-2/49=56-2/49=54/49
4. 40/20-50/200
Simplifici 50/200 cu 10:
40/20-5/20=40-5/20=35/20
Simplifici 35/20 cu 5: 7/4
5. 21/27-5/9
Simplifici 21/27 cu 3:
7/9-5/9=7-5/9=2/9
6. 64/9-45/81
Simplifici 45/81 cu 9:
64/9-5/9=64-5/9=59/9
7. 10/12-49/84
Simplificăm 49/84 prin 7:
10/12-7/12=10-7/12=3/12
Simplificăm 3/12 cu 3:3/12=1/4
8. 20/31-12/93
Simplificăm 12/93 cu 3:
20/31-4/31=20-4/31=16/31
9. 8/64-6/128
Amplificăm 8/64 cu 2:
16/128-6/128=16-6/128=10/128
Simplificăm 10/128 cu 2=5/64
10.  8/16-2/32
Amplificăm 8/16 cu 2:
16/32-2/32=16-2/32=14/32
Simplificăm 14/32 cu 2: 14/32=7/16
Sper că te-am ajutat!