Answer:
Step-by-step explanation:
X = number of wooden strips
Y = number of hardwood strips
5X + 4.3Y = 25
(-4,6)
y=6
5x+5(6)=10
5x+30=10
5x=-20
x=-4
(x,y)
The numbers are 5 and -4
let the numbers be =x and y
x+y=1—eqn 1
x-y=9—eqn 2
Add both equations
2x=10
x=5
Plug x=5 into eqn 2
5-y=9
5-9=y
y=-4