Question

calculati:a)(17/3impartit21/4)impartit34/7;b)(36/13impartit4)impartit(5/26impartit7/36)c)31/2impartit21/3)impartit(6impartit12,19)

Answer 1

Răspuns: a) 2/9 ; b) 7/10 ; c) 37789/8400

Explicație pas cu pas:

a) (17/3 : 21/4) : 34/7 =

(17/3 × 4/21) × 7/34 =

68/63 × 7/34 =

2/9

×××××××××××××××

b) (36/13 : 4) : (5/26 : 7/36) =

(36/13 × 1/4) : (5/26 × 36/7) =

9/13 : (5/13 × 18/7) =

9/13 : 90/91 =

9/13 × 91/90 =

7/10

×××××××××××××××

c) (31/2 : 21/3) : (6 : 12,19) =

(31/2 × 3/21) : (6 : 1219/100) =

(31/2 × 1/7) : (6 × 100/1219) =

31/14 : 600/1219 =

31/14 × 1219/600 =

37789/8400

" / " = linie de fractie

Succes ! =)