What is (542)+43×89+21

Answer is 4390

Step-by-step explanation:

Apply BODMAS to the above question

First step- open bracket to get=

542+43×89+21

Then multiply=

542+3827+21

Then add the numbers =

4390

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted

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: