0 / 6 is equal to 0 because anything that divides 0 will always be zero but never if the problem is 6/0
(2x - 5y) + (x +y) =
2x - 5y + x + y =
3x - 4y
or
-4y +3x
they are equivalent statements
10 blocks = 6 min
30 blocks = 18 min
You can answer this because you know that 10 x 3 is 30, so if if the number of blocks tripled then the amount of time should triple as well because he's running at the same rate.
Multiplying-
Negative times negative is positive
negative times positive is negative
positive times positive is positive
Dividing-
positive divided by positive is positive
negative divided by positive is negative
positive divided by negative is negative
negative divided by negative is positive
Hope this helps!!
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