Emesto tried to determine the solution for the system of
equations using substitution his work is shown below.
in which step did ernesto make the first error?
xy=7
step 1
step 2
step 3
step 4
3x - 2y = 8
step 1 x=y+7
step 2: 3y + 7) - 2y = 8
step 3: 3y + 7 - 2y = 8
step 4y+ 7 = 8
step 5: y = 1

54

step-by-step explanation:

6x9

i can answer this question sweetie!

step-by-step explanation:

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: