Evaluate numerical expression . be sure to use the order of operations rules.

First multiplication (9 × 3).

Than addition. (1.5 + 27)

The result is 28.5

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step-by-step explanation:

i looked it up

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: