Question

am nevoie urgentttt​

Answer 1

raspunsul+explicatie:

a) (11/6+3/4):31/24=(4*11+6*3)/24:31/24=62/24*24/31 simplificam pe diagonala si iese 2

b) (5/6+11/9):74/9=(5*3+11*2)/18*9/74=37/18*9/74 se simplifica pe diagonala si iese 1/4

c) (1/6+17/8):77/24+2/7=(4+51)/24*24/77+2/7=55/24*24/77 + 2/7=5/7+2/7=7/7=1

d) 12=·3

    18=2·3²

facem c.m.m.m.c (el comune la puterea cea mai mare si necomune)=2²·3²=4·9=36

deci prima fractie o amplificam cu 3 ca sa dea 36 iar a doua cu 2

(11/12-13/18):7=(33-26)/36:7/1=7/36·1/7=1/36

e) 45=3²·5

30=3·2·5

c.m.m.m.c=3²·2.5=90

prima fractie se amplifica cu 2 si a doua fractie se amplifica cu 3

(19/45-7/30):34/5=(38-21)/90·5/34=17/90·5/34=1/36

f) 12=2²·3

15=3·5

c.m.m.m.c=2²·3·5=60

prima fractie cu 5 si a doua cu 4 le amplificam

(13/12-7/15):37/30+1/2=(65-28)/60·30/37+1/2=37/60·30/37+1/2=1/2+1/2=2/2=1

sper ca te-am ajutat!! spor!!