The work of a student to solve a set of equations is shown: Equation A: y = 4 − 2z Equation B: 4y = 2 − 4z Step 1: −4(y) = −4(4

Question

2 years ago

6

The work of a student to solve a set of equations is shown: Equation A: y = 4 − 2z Equation B: 4y = 2 − 4z Step 1: −4(y) = −4(4

− 2z) [Equation A is multiplied by −4.] 4y = 2 − 4z [Equation B] Step 2: −4y = 4 − 2z [Equation A in Step 1 is simplified.] 4y = 2 − 4z [Equation B] Step 3: 0 = 6 − 6z [Equations in Step 2 are added.] Step 4: 6z = 6 Step 5: z = 1 In which step did the student first make an error? (5 points)

Mathematics

2 answers:

mina [271] · Answer 1 · 2022-11-18T17:17:30+03:00

mina [271]2 years ago

8 0

Answer:

step 2.

Step-by-step explanation:

dem82 [27] · Answer 2 · 2022-11-18T15:03:46+03:00

dem82 [27]2 years ago

4 0

Answer:

The student made the first mistake in step 2.

Step-by-step explanation: