Question

Afla trei numere stiind că adunandu-le doua cate doua obținem respectiv:23.5 11.3 18.7

Answer 1

Răspuns:

Explicație pas cu pas:

a+b =23.5

a+c=11.3

b+c =18.7

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2a+2b+2c=23.5+11.3+18.7=53.5

2(a+b)+2c =53.5

2*23.5 + 2c=53.5

47+2c=53.5

2c=53.5-47 =6.5

c=3.25

b+3.25 =18.7

b=18.7-3.25=15.45

a+15.45=23.5

a=8.05