PLease help trying to finish a math credit

Question

Lisa, Tom, and Hans served a total of 71 orders Monday at the school cafeteria. Hans served 2 times as many orders as Lisa. Tom served 5 fewer orders than Lisa. How many orders did they each serve?

Number of orders Lisa served:
Number of orders Tom served:
Number of orders Hans served:

Answer 1

Number of orders Lisa served:
Number of orders Tom served:	T=L-5, so L=T+5 and T -L= -5
Number of orders Hans served:	H=2L, so L=H/2 and H - 2L = 0
T+H+L=71

T+H+L=71

Putting everything in terms of one variable.

(L-5)+2L+L=71

Solve for L

then solve for T=L-5 using what you found for L

then solve for H=2L using what you found for L.

You could also

T - L = -5

H -2L= 0

H + T+ L =71

And solve the 3 variable simultaneous equations.

Answer 2