Question

determinati fractia a/b stiind ca este echivalenta cu 4/5 si a-b=6

Answer 1

a/b=4/5 ==> a=(4b)/5
(4b)/5-b=6
(4b)/5-(5b)/5=6
-b/5=6 ==> -b=-30
a=[4×(-30)]/5
a=-120/5
a=-24