Question

Which of the following is a step that can be used to find the solution to the set of equations?

2d + 1 = 3d + 5
2d = 3d + 5
2d + 1 = 3d
2d + 5 = 3d + 1

Answer 1

Equations:

Equation A: c = 2d + 1
Equation B: c = 3d + 5

Is it A?

Answer 2

A is correct :)

Answer 3

The work of a student to solve a set of equations is shown:

Equation A: y = 15 − 2z
Equation B: 3y = 3 − 4z


Step 1: −3(y) = −3(15 − 2z) [Equation A is multiplied by −3.]
3y = 3 − 4z [Equation B]
Step 2: −3y = 15 − 2z [Equation A in Step 1 is simplified.]
3y = 3 − 4z [Equation B]
Step 3: 0 = 18 − 6z [Equations in Step 2 are added.]
Step 4: 6z = 18
Step 5: z = 3


In which step did the student first make an error?
Step 4
Step 3
Step 2
Step 1

Answer 4

wat do u think?

Answer 5

No clue xc 1st step?

Answer 6

read them through step by step plz....its not the 1st...

Answer 7

2?

Answer 8

why? whats wrong there?

Answer 9

I'm just guessing.

Answer 10

:( but u guess right - lucky gurl!! lol

Answer 11

So it's the second one?

Answer 12

Step 1: −3(y) = −3(15 − 2z) [Equation A is multiplied by −3.]

Step 2: −3y = 15 − 2z [Equation A in Step 1 is simplified.]


See anything wrong there??

Answer 13

The simplification?

Answer 14

@sdfgsdfgs

Answer 15

yes - something went wrong there...