9x-4y=2000, 7x-3y=2000
Solve the first given equation for y.
1. 9x - 4y = 7x - 3y
2. 2x = y
Sbstitute y into equation 1.
3. 9x - 4(2x) = 2000
4. 9x - 8x = 2000
5. x = 2000 <<<<<
Substitute x into equation the second given equation.
6. 7(2000) - 3y = 2000
7. 7(2000) - 2000 = 3y
8. 6(2000) = 3y
9. 2(2000) = y
10. y = 4000 <<<<<
Substitute both x and y into the first given equation.
11. 9(2000) - 4(4000) = 2000
12. 18000 - 16000 = 2000
13. 2000 = 2000
Substitute both x and y into the second given equation.
14. 7(2000) - 3(4000) = 2000
15. 14000 - 12000 = 2000
16. 2000 = 2000