Răspunsuri

2014-09-26T09:47:44+03:00
a-b=10,a/b=3/4,a:b=3:4
a=3/4xb,a=3b/4
3b/4-b=10
3b-4b=40
-b=40
b=-40
a-(-40)=10
a+40=10
a=10-40=-30

2014-09-26T09:49:14+03:00
A-b=10
a/b=3/4
4a=3b
a=3b/4
3b/4-b=10
3b-4b=40
-b=40  b=-40
a=3*(-40)/4=-30