What is 3 divided by 0?

0

Explanation:

0 cannot divide a number or be divided by any number. It represents nothing.

Example

If you have 3 pencils and 0 students in a class, you cannot divide the pencils among students that aren't in that class.

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