W+d=869
w=d-81
plug in
(d-81)+d=869
2d-81=869
+81 both sides
2d=950
÷2 both sides
d=475
dryer cost $475
let's check w=475-81
w=394
475+394=869
869=869
the solution is true :)
I just multiplied by 3 I'm not sure if that's right to do but I got 450000
Answer
0
Step-by-step explanation:
Let the length be l
We know that,

It’s about -1.5555 I think