Question

diferenta a doua numere este 7,88 iar suma lor este 19,52

Answer 1

a - b =7,88
a + b = 19,52
a=7,88+b
7,88+b+b=19,52
7,88+2b=19,52
2b=19,52-7,88
2b=11,64
b=11,64:2
b=5,82
a=7,88+5,82=13,7
13,7-5,82=7,88
13,7+5,82=19,52