Răspuns :
28+15:a+21:3=38
28+15:a+7=38
28+15:a=38-7
28+15:a=31
15:a=31-28
15:a=3
a=15:3
a=5
28+15:a+7=38
28+15:a=38-7
28+15:a=31
15:a=31-28
15:a=3
a=15:3
a=5
28 + 15 : a + 21 : 3 = 38
28 + 15 : a + 7 = 38
15 : a = 38 - 7 - 28
15 : a = 3
a = 15 : 3
a = 5
Succes la teme! :)) ❤❤❤
28 + 15 : a + 7 = 38
15 : a = 38 - 7 - 28
15 : a = 3
a = 15 : 3
a = 5
Succes la teme! :)) ❤❤❤