x + y = 7500 -----equation 1
2.5x + 3.25y = 3 -----equation 2
dividing equation 2 with 2.5
[2.5x + 3.25y = 3] ÷ 2.5
x + 1.3y = 1.2 -----equation 2'
subtract equation 2' from equation 1
x + y = 7500
- x + 1.3y = 1.2
-0.3y = 7498.8
y = -24996
substitute y=-24996 to equation 1
x + y = 7500
x +(-24996) = 7500
x = 7500 + 24996
x = 32,496
