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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Let the original number be x y.(x at ten's place and y at units place) Therefore, the number can also be 10x+y. New number after interchanging the digits=y x. This number can also be 10y+x. Given, 10y+x-10x-y=18 or,9y-9x=18 or,x-y=2...............(2) Also given , x+y=12...........(1) Subtracting equation (2) from equation (1) we get= x+y-(x-y)=12-2 or,x+y-x+y=10 or,2y=10 or,y=5. Since x+y=12 x+5=12 or, x=7. Therefore, the original number is 57 AND THE OTHER NO IS 75