Question

3 si 5???? Plzzz nu stiu sa le rezolv

Answer 1

a/b = 3 ⇒ a = 3b

(2a+b)/(3a-b) = (2·3b+b)/(3·3b-b)= (7b)/(8b) = 7/8

Answer 2

3.a=3b
(2·3b+b)/3·3b-b=7b/8b=7/8

5.A={-5,-4,-3,-2,-1,0,1,2}
   B={x/x∈(-∞,4]}
A∩B={-5,-4,-3,-2,-1,0,1,2}
A\B=∅