Multiplying integers with a variable? Please helppp.?

Question

4r x 7s????

(-3)(4)(-x)???

and -5(0)(-xy)???

Answer 1

4r x 7s = 28rs

(-3)(4)(-x) = 12x

-5(0)(-xy) = 0

Answer 2

its very simple. when you are multiplying integers with variables multiply the numbers and then write in the variables right next to them

4r x 7s becomes: 4 x 7 which is 28 and then there are no more like terms so u just keep the s and the r there. the ans would be 28rs

(-3)(4)(-x) the same thing here. multiply the numbers, (-3) x (4) is 12 and then u keep the x. but be careful. in this case it is a negative x which means that it is being multiplied by negative 1. so now you have -12 time x times -1 which gives u 12x.

the last one is a trick question. anything multiplyed by 0 is equal to 0. so thats the answer.

Answer 3

4r x7s:

Ok, so what you need to do is look at stuff like 4r and 7s as 4 times r and 7 times s.

So your equation becomes: 4 x r x 7 x s

Simplify that to 28rs.

4r x7s = 28rs

(-3)(4)(-x):

Begin with the given numbers: -3 and 4.  We know that 4 times 3 is 12.

So since one of the numbers is negative, it's negative: -12.

Then multiply -12 by -x.  Since two negatives make a positive, you end up with 12x.

(-3)(4)(-x) = 12x

-5(0)(-xy):

Start by multiplying -5 by 0.  Since anything multiplied by 0 is 0, -5 x 0 = 0.  Now when you multiply this by (-xy), the answer will still be zero.

-5(0)(-xy) = 0

Hope this was helpful and not too confusing!

Good luck! :)