Răspunsuri

2014-10-19T19:54:06+03:00
4a+7=26
4a=26-7
4a=19
a=19:4
a=4,75

4a+7=38
4a=38-7
4a=29
a=29:4
a=7,25

4a+7=48
4a=48-7
4a=39
a=39:4
a=9,75