Question

efectuati calculele
urgeeeeent​

Answer 1

Răspuns:

a)[(24/35+7/5)+1·3/7]+2·4/5=

[(24+49/35)+3/7]+8/5=

(73/35+3/7)+8/5=

(73+15/35)+8/5=

88/35+8/5=88+56/35=144/35

b)[(1·7/12+25/18)+3·5/6]+1·4/24=

[(7/12+25/18)+15/6]+4/24=

[(21+50/36)+5/2]+1/6=

(71/36+5/2)+1/6=

(71+90/36)+1/6=

161/36+1/6=161+6/36=167/36

c)[2·5/21+(3·3/7+17/21)]+4·1/3=

[10/21+(9/7+17/21)]+4/3=

[10/21+(27+17/21)]+4/3=

(10/21+44/21)+4/3=

54/21+4/3=

18/7+4/3=54+28/21=82/21

d)[(1·7/9+3/4)+1·15/12]+1·3/4=

[(7/9+3/4)+15/12]+3/4=

[(28+27/36)+5/4]+3/4=

(55/36+5/4)+3/4=

(55+45/36)+3/4=

100/36+3/4=

25/9+3/4=100+27/36=127/36

sper că te-am ajutat!

Answer 2

Adunarea si scaderea fractiilor cu numitor diferit :
1. Se adic fractiile la acelasi numitor ( cel mai mic numitor comun )
2 se aduna numaratorii

Sper ca te-am ajutat ✌ spor la teme