3latrell made a large pizza. he ate 10 of the
pizza for lunch and of the pizza for dinner.
how much of the pizza did latrell eat for lunch
and dinner?
a
b to cź
d'

10 if there is an error in the question (and of the pizza for dinner.)

or 20

Step-by-step explanation:

Just add what he ate for lunch and dinner

It never said how he cut his pizzas. Also it never said if he finished it or not.

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