Question

Efectuati calculele : 2/7 + 5/7 = b) 3/11+6/11+2/11= c) 1/2+13+16= e) 5/6-1/4-5/12=

Answer 1

Răspuns:

Explicație pas cu pas:

A)2/7+5/7=7/7(simplificam cu 7) =1/1

B) 3/11+6/11+2/11=11/11(simplificam cu 11) =1/1

C) 1/2+13/1+16/1=1/2+26/2+32/2(amplificam cu 2) =59/2

E) 5/6-1/4-5/12=10/12-3/12-5/12=2/12(simplificam cu 2) =1/6

Answer 2

2/7+5/7=7/7=1

3/11+6/11+2/11=11/11=1

1/2+13+16=1/2+13/+16/1=1/2+26/2+36/2=59/2

5/6-1/4-5/12=10/12-3/12-5/12=2/12=1/6