Question

Math HELP!!!

Answer 1

Dom wrote the following steps to simplify the expression (x − y + 5y).

Step 1: x + 5y − y; using commutative property of addition
Step 2: x + (5y − y); using associative property of addition
Step 3: x − (5 + 1)y; using distributive property of addition
Step 4: x − (6)y; simplifying

Which step was incorrect, and what should be the correct step that Dom should use?
Answer

Step 2 was incorrect. Correct step: x − (5y − y); using associative property of addition

Step 3 was incorrect. Correct step: x − (−5 − 1)y; using distributive property of addition

Step 3 was incorrect. Correct step: x + (5 − 1)y; using distributive property of addition

Step 2 was incorrect. Correct step: x + (5y + y); using associative property of addition

Answer 2

The 3rd one: Step 3 was incorrect. Correct step: x + (5 − 1)y; using distributive property of addition.

Do you know why?

Answer 3

Why?

Answer 4

It's because distributive property doesn't involve the change of signs. Notice how he put '+' instead of '-'

Answer 5

ok

Answer 6

lol that made a funny face XD

Answer 7

'+'

Answer 8

'_'

Answer 9

See?

Answer 10

Hahahahahaa correct.

Answer 11

Thanks again!

Answer 12

:D