Question

Ex 3 4 5 Dau coroana.Va rog frumos sa rezolvati cu sims de raspundere

Answer 1

4a)1/2=2/2=1

1/2=6/12=1/2
1/2=9/18=1/2
b)4/5=8/10=4/5
4/5=24/304/5
4/5=36/45=4/5
c)21/5=42/10=21/5
21/5=126/30=21/5
21/5=189/45=21/5
d)100/101=200/202=100/101
100/101=600/606=100/101
100/101=900/909=100/101
e)11/3=22/6=11/3
11/3=66/18=11/3
11/3=99/27=11/3
f)12/7=24/14=12/7
12/7=72/42=12/7
12/7=108/63=12/7
g)7/8=14/16=7/8
7/8=42/48=7/8
7/8=63/72=7/8

5a)4/10=2/5(simplificăm cu 2)
9/6=3/2(simplificăm cu 3)
120/50=60/25=12/5(simplificăm cu 2,apoi cu 5)
35/70=7/15(simplificăm cu 5)
11/66=
32/24=16/12=4/3(simplificăm cu 2,apoi cu 4)
32/64=16/32=4/8=1/2
999/81=333/27=111/9
66/23=
24/480=12/240=6/40=3/20
1400/2100=200/300=100/150=50/75=10/15=2/3