Question

determină suma a plus b plus c știind că 7a plus 7b plus 7c egal 35 b) 200-11a-11c=101​

Answer 1

7a+7b+7c=35

7•(a+b+c)=35 |:7

=> a+b+c=5

b)200-11a-11b-11c=200-101

11•(a+b+c)=99 |:11

=> a+b+c=9

Sper ca e bine