Question

Ajutatama va rog foarte mult !!!!!!!!!!!​

Answer 1

Răspuns:

a)

a×b= 5/4×2/5= 1/2

7/8×b = 7/10

b= 7/10÷ 7/8

b= 7/10× 8/7

b= 1/5× 4/1= 4/5

proba÷ 7/8× 4/5= 14/ 20= 7/10

a× 3/2= 5/6

a= 5/6÷ 3/2

a= 5/6 × 2/3

a= 5/9

proba÷ 5/9× 3/2= 5/3×1/2=5/6

b)

a÷b = 5/4÷ 2/5

a÷b= 5/4× 5/2

a÷b= 25/8

7/8÷b= 7/10

b= 7/10× 7/8

b= 49/80