Question

Calculati: a)1/7+2/7+4/7
b)1/63+3/63+5/63
c)17/152+49/152+86/152
d)29/77-13/77-5/77
e)11/4-1/4-3/4-5/4
f)137/371-35/371-49/371-51/371​

Answer 1

Răspuns:

Explicație pas cu pas:

a)(1+1+4)/ 7 =7/7=1

b)(1+3+5)/63=9/63=1/7

c)(17+49+86)/152=152/152=1

d)(29-13-5)/77=11/17

e)(11-1-3-5)/4=2/4=1/2

f)(137-35-49-51)/371=2/371

Answer 2

Răspuns:

a)-7/7=1

b)-9/63=1/7

c)-152/152=1

d)-57/77

e)-2/4=1/2

f)-2/371