Question

proportions

Answer 1

90/x=3/4

what is x?

Answer 2

x=120

Answer 3

x=120

Answer 4

90/x=3/4 cross multiply
90*4=3x
x=360/3=120

Answer 5

Multiply both sides by 4x.

Answer 6

Don't use cross multiplication. It's childish in my opinion. Multiply the equation with denominators instead.

Answer 7

@Zuige u think ur way is easier ?

Answer 8

it's the exact same thing, just doesn't confuse people as much.

Answer 9

I know it's the same but id she has a similar kind if problem it would be eaier 4 her to remember tht all she has to do is cross multiply than ''Multiply both sides by 4x.'' which u didn't explain why by 4x

Answer 10

Ultimately it's a matter of opinion. I've always found cross muliplication to be unnecessary.