Ateacher wants to divide the 28 students in a class into equal groups. find all possible group sizes by writing all the factors of 28.

hi my name is ashlynn and im 15

1, 2, 4, 7, 14, 28 are all factors of 28

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

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