Question

0.4k+0.3=1.7, 0.7x-0.2y=0.8

Answer 1

Hey mate!!!

Here is your answer!!!

0.4k+0.3=1.7
0.4k=1.7-0.3
0.4k=1.4
k=1.4/0.4
k=14/4
k=3.5

Hope it helps