0.3x + 0.5y = 0.5,
0.5x + 0.7y = 0.74.
Multiply both the equations by 10, we get
3x + 5y = 5 ….(1)
5x + 7y = 7.4 ….(2)
Multiply (1) by 7 and (2) by 5. And subtract both the equations.

Substitute the value of x in equation (1), we have
3(0.5) + 5y = 5
y = 0.7
Answer: x = 0.5 and y = 0.7