Question

Ajutati-ma cu exercitile 9 si 11

Answer 1

a))
= 12/18+24/20
= 2/3+ 12/10
= 20/30+39/30
= 59/30
b))
= 63/12-48/15
= 315/60-192/60
= 123/60
= 41/20
C))
-5/4 +4/9
= 4/9-5/4
= 16/36-45/36
= (-29/36)
D))
= (-315/350 )-4/3
= -63/70-4/3
= -189/210 - 280/210
= -469/210
= -67/30
E))
= 16/15 :4/9 -(120/54)
= 12/5-20/9
= 117/45-100/45
= 17/45
F))
= 36/35 :27/14-126/175
= 504/945- 126/175
= 56/105-126/175
= 8/15-126/175