4x + 0.4y = -0.8 6x + 0.4y = 4.2the solution to the system is

x= 1/2

y=3

Step-by-step explanation:

it is easier to subtract both equation and obtain a new one

1) 6x+0.4y=4.2

2) -4x+0.4y=-0.8

1) -2)= 10x+0=5 leading to x=1/2

Now just eval x=1/2 in any of the original equations, for instances

1) 6*(1/2) +0.4*y=4.2, which leads to y=3

answer: 5

step-by-step explanation:

thats not a system of equations, that is a solution