Question

9 times a number has 1 subtracted from it. The result is trebled. The answer is the same if you add 7 to twice the number and multiply the result by 7. What is the number?

Answer 1

Answer:

-10

Step-by-step explanation:

let the number be x

9 times the number=9x

1 is subtracted from that

so it becomes 9x-1.....1

eq 1 is same as

7 added to twice the number=2x+7

and multipling result by 7 = 7(2x+7)......2

now as given eq 1 and 2 are equal

9x-1=7(2x+7)

9x-1=14x+49

-5x=50

x=-10

hope it helps u

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