Question 43027
Solve the following system: 
1st: 0.4x - 0.2y = 0.6
2nd: 2.5x - 0.3y = 4.7


Multiply through both by 10 to get rid of the decimals.
1st: 4x - 2y = 6
2nd: 25x - 3y = 47

Multiply the 1st by 3 and the 2nd by 2 to get:

1st: 12x - 6y = 18
2nd: 50x -6y = 94

Subtract the 1st from the 2nd to get:

38x =76
x=2 

Substitute to solve for "y", as follows:

12(2) -6y = 18
-6y=-6
y=1

SOLUTION:
x=2, y=1

Cheers,
stan H.