Question

Scrieti toate fractiile care au numitorul 30, cuprinse intre $\frac{3}{20}$ si $\frac{13}{25}$ .

Answer 1

Răspuns:

Explicație pas cu pas:

3/20 = 45/300

13/25=156/300

x/30>45/300 <=> 10x > 45 deci x>4,5 prin rotunjire x>5

y/30<156/300 <=> 10y<156 deci y<15,6

deducem ca fractiile cautate sunt:

5/30,6/30, 7/30, 8/30, 9/30, 10/30, 11/30, 12/30, 13/30, 14/30 si 15/30