(5y-23)
(2x+13)
(3x)
47*

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

he has now walked a total of what?

if i know what this is maybe i can

step-by-step explanation:

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2