Question

what expression is equivalent to 5x+7y

Answer 1

Do you have choices?

Answer 2

A) 5y+7x
B)7y+5x
C)7Y(5X)
D)12xy

Answer 3

Which one do you think?

Answer 4

i dont know

Answer 5

D

Answer 6

you just got me wrong

Answer 7

Okay let's make x - 2 and y - 3

5x + 7y
5 x 2 + 7 x 3
10 + 21
31

Now we plug in 2 (x) and 3 (y) in the answer choices and see which one equals 31

Choice A.
5y + 7x
5 x 3 + 7 x 2
15 + 14
19

Choice B
7y + 5x
7 x 3 + 5 x 2
21 + 10
31

Choice C
7y(5x)
7 x 3(5 x 2)
21(10)
210

Choice D
12xy
12 x 2 x 3
24 x 3
72

Answer 8

smart

Answer 9

So which one represents 5x + 7y?

Answer 10

Just a simple trick I learned =)

Answer 11

i already got it wrong from kaylee

Answer 12

Choice B is 5x + 7y flipped around, so wouldn't you think that they represent each other?

Answer 13

sorry... I learned from a friend but this even helped me

Answer 14

Original Equation - 5x + 7y

Choice B - 7y + 5x

Answer 15

you can't change it