Asking the Math Gods...
X=2
Y=5
Sub y=3x-1
[(3x-1)=7x-9]
Isolate x for (3x-1)=7x-9: x=2
for y=3x-1
Sub x=2
y=3*2-1 y=5
Just plug in the numbers for the variables.
20+3(8)+17(2)=
Cool, but we need more information...
Answer:
135
Step-by-step explanation: