## Spring98 one year ago Maya solved an equation incorrectly, as shown below: Step 1: 4x = 28 Step 2: x = 28 – 4 Step 3: x = 24 Which statement best explains why Step 2 is incorrect in Maya's solution? She did not add 4 to 28. She did not multiply 28 by 4. She did not divide 28 by 4. She did not multiply 28 four times.

1. Nnesha

4 times x = 28 to cancel oout 4 what would u do ? subtract add multiply or divide ?

2. Michele_Laino

Maya has to divide by 4, not subtract 4

3. Spring98

divide 4 with what number?

4. Michele_Laino

4 is a factor not an addend so Maya has to divide both sides of her equation by 4, like this: $\Large \frac{{4x}}{4} = \frac{{28}}{4}$

5. Spring98

the x would equal 7. so 4*7=28

6. Michele_Laino

no, the value of x, is: x=28/4=... since we have: |dw:1433355383651:dw|

7. Spring98

then what do we do?

8. Michele_Laino

as I wrote before, we have to divide both sides of our equation by 4, so we can write: $\large \frac{{4x}}{4} = \frac{{28}}{4} \Rightarrow x = \frac{{28}}{4} \Rightarrow x = 7$

9. Spring98

So that shows me that step 2 is incorrect right?

10. Michele_Laino

right!

11. Spring98

so it is she did not divide 28 by 4 right?

12. Michele_Laino

that's right!

13. Spring98

thanks for helping @Michele_Laino

14. Michele_Laino

:)