Question

The work of a student to solve the equation 2(3x − 4) = 8 + 2x + 4 is shown below:

Step 1: 2(3x − 4) = 8 + 2x + 4
Step 2: 5x − 6 = 12 + 2x
Step 3: 5x − 2x = 12 + 6
Step 4: 3x = 18
Step 5: x = 6

In which step did the student first make an error and what is the correct step?

Step 2; 6x − 6 = 2(6 + x + 2)

Step 2; 6x − 8 = 12 + 2x

Step 3; 5x − 2x = 12 − 6

Step 3; 5x + 2x = 12 + 6

Answer 1

please help me

Answer 2

Step 1: 2(3x − 4) = 8 + 2x + 4
Step 2: 5x − 6 = 12 + 2x
Step 3: 5x − 2x = 12 + 6
Step 4: 3x = 18
Step 5: x = 6

Answer 3

The work of a student to solve the equation 2(3x − 4) = 8 + 2x + 4 is shown below:

Step 1: 2(3x − 4) = 8 + 2x + 4
Step 2: 5x − 6 = 12 + 2x
Step 3: 5x − 2x = 12 + 6
Step 4: 3x = 18
Step 5: x = 6

In which step did the student first make an error and what is the correct step?

Step 2; 6x − 6 = 2(6 + x + 2)

Step 2; 6x − 8 = 12 + 2x

Step 3; 5x − 2x = 12 − 6

Step 3; 5x + 2x = 12 + 6

Answer 4

2(3x-4)=8+2x+4
6x-8=12+2x
6x-2x=12+8
4x=20
x=20/4
x=5
this is how this question shd be worked...

Answer 5

thanks can you help me with another

Answer 6

sure

Answer 7

Which of these is a simplified form of the equation 6y + 4 = 8 + 2y + 2y?

6y = 8
10y = 12
2y = 4
4y = 12

Answer 8

6y+4=8+2y+2y
6y+4=8+4y
6y-4y=8-4
2y=4
y=4/2
y=2

Answer 9

can u see it??

Answer 10

check the working i just did and look for the answer

Answer 11

correct

Answer 12

thanksss can u help with more

Answer 13

sure

Answer 14

How many solutions does the equation −3a + 3a + 6 = 7 have?

One
Two
Infinitely many
None

Answer 15

-3a+3a=0
so none

Answer 16

What is the solution to the equation 1.6m − 4.8 = −1.6m?

m = 0.5
m = 0.7
m = 1.5
m = 3

Answer 17

the a term cancel out each other

Answer 18

1.6m-4.8=-1.6m
1.6m+1.6m=4.8
3.2m=4.8
m=4.8/3.2
m=1.5

Answer 19

wowww ur amazing

Answer 20

would i be pushing it if i ask for more help?

Answer 21

nah

Answer 22

What is the value of x in the equation −6 + x = −3?

−9
−3
3
9

Answer 23

aye u got insta?

Answer 24

-6+x=-3
x=-3+6
x=3

Answer 25

What is the value of x in the equation −x = 4 − 3x + 6?

5
10
−5
−10

Answer 26

Which statement is true about the equation fraction 3 over 4z = fraction 1 over 4z − 3 + 5?

It has no solution.
It has one solution
It has two solutions.
It has infinitely many solutions.

Answer 27

-x=4-3x+6
-x=10-3x
-x+3x=10
2x=10
x=5

Answer 28

so D?

Answer 29

What is the value of x in the equation −x = 4 − 3x + 6?
x=5

Answer 30

\[\frac{ 3 }{ 4z }=\frac{ 1 }{ 4z }-3+5 \] is this the correct question/equation

Answer 31

How many solutions does the equation 6a − 3a − 6 = −2 + 3 have?

Two
None
One
Infinitely many

Answer 32

im talking about this question we havent started as yet
What is the value of x in the equation −x = 4 − 3x + 6?

It has no solution.
It has one solution
It has two solutions.
It has infinitely many solutions.

Answer 33

so this was the question
Which statement is true about the equation fraction 3 over 4z = fraction 1 over 4z − 3 + 5?

Answer 34

we havent started the above question as yet

Answer 35

but for this question How many solutions does the equation 6a − 3a − 6 = −2 + 3 have?
the answer is one

Answer 36

thxs

Answer 37

What is the value of z in the equation 2(4z − 3 − 1) = 166 − 46?

14
15
16
17

Answer 38

2(4z-3-1)=166-46
8z-6-2=120
8z=120+8
z=16

Answer 39

hey can u help with more

Answer 40

ok 3more but you have to look at the pattern of my solution when it comes to solving equation ok

Answer 41

k thxs

Answer 42

How many solutions does the equation −3y + 3y + 4 = 4 have?

Zero
Infinitely many
One
Four

Answer 43

-3y+3y+4=4
and

-3y+3y=0 so no solution

Answer 44

The student committed an error on Step 2 because instead of multiplying 2 to 3x the student ended up adding the two, getting 5x.

Correct step is 6x-8 = 12x + 2x