Răspunsuri

2014-10-18T17:19:51+03:00
26-7=19  19÷4=4.75
38-7=31  31÷4=7.75
48-7=41  41÷4=10.25

2014-10-18T17:21:43+03:00
Primul caz
4a+7=26
a=(26-7):4
a=19:4
a=4,75
Al doilea caz
4a+7=38
a=(38-7):4
a=31:4
a=7,75
Al treilea caz
4a+7=48
a=(48-7):4
a=41:4
a=10,25

Sper ca te-am ajutat !