Ernesto tried to determine the solution for the system of equations using substitution. his work is shown below.

x – y = 7

3x – 2y = 8

step 1: x = y + 7
step 2: 3(y + 7) – 2y = 8
step 3: 3y + 7 – 2y = 8
step 4: y + 7 = 8
step 5: y = 1

in which step did ernesto make the first error?

step 1
step 2
step 3
step 4

Its actually STEP 3

The person above is incorrect :/

4 adults and 12 babies

step-by-step explanation:

4 x 7 = 28

12 x 15 = 180

180 + 28 =208

4 x 3 = 12

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.