Răspuns :
a+2b / 10a-3b = 4/5
5(a+2b)= 4(10a-3b)
5a+10b=40a-12b
22b=35a
=>a/b=22/35
(a+2b)/(10a-3b)=4/5
5(a+2b)=4(10a-3b)
5a+10b=40a-12b
5a-40a= -12b-10b
-35a= -22b
35a=22b
a/b=22/35
a+2b / 10a-3b = 4/5
5(a+2b)= 4(10a-3b)
5a+10b=40a-12b
22b=35a
=>a/b=22/35
(a+2b)/(10a-3b)=4/5
5(a+2b)=4(10a-3b)
5a+10b=40a-12b
5a-40a= -12b-10b
-35a= -22b
35a=22b
a/b=22/35