4/2-3/1=

Find the expresstion

it would be -1

Step-by-step explanation:

you would first do

4/2 - 3/1

than...

4/2 + -3/1

also...

2/1 + -3/1

lastly...

2 + -3/1

and u get -1

Hope this helps!

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step-by-step explanation:

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it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: