Sue solved an equation incorrectly, as shown below:

step 1: 7x = 28
step 2: x = 28 − 7
step 3: x = 21

which statement best explains why step 2 is incorrect in sue's solution?

she did not multiply 28 seven times.
she did not divide 28 by 7.
she did not multiply 28 by 7.
she did not add 7 to 28.

She did not divide 28 by 7.  

Step-by-step explanation:

You do the inverse of multiplication which is division. You do not subtract.  

7x = 28

7        7

x = 4

Sorry I'm late!

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents