Question

15k + 7k = 2k + 5

A) 1/4
B) 2/5
C) 4
D) 3

Answer 1

15k₊7k=2k₊5
22k=2k₊5
22k-2k=5
    20k=5
        k=5/20

Sacamos 5

k=1/4

Rpta: A

Answer 2

15k+7k-2k= 5
20k= 5
k= 5/20 simplificamos
k=1/4