Question

Q15. Solve substitution method. (A). Solve the equation. (i) 0.2x + 0.3y = 1.3 and 0.4x + 0.5y = 2.3 (ii) / - / = -2 and / + / = / ​

Answer 1

Answer:

2x+3y=13

4x+5y=23

x=(13-3y)/2

2(13-3y)+5y=23

26-6y+5y=23

y=3

x=2