Question

9d+n= 57
I need to find the answer for d

Answer 1

`\LARGE{ \underline{ \pink{ \bf{Required \: answer:}}}}`

Since there are two variables in the equation and no other simultaneous equation is not given, We need to express d in terms of other elements in the equation.

GiveN:

• 9d + n = 57

So, Let's find d from the above equation. Subtracting n from both sides of the equation.

⇛ 9d = 57 - n

Now dividing the equation by 9,

⇛ 9d / 9 = 57 - n / 9

⇛ d = 57 - n / 9

Thus, the required answer for d is:

`\boxed{ \rm{d = (57 - n)/(9) }}`

And we are done ......

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Answer 2

`\tt Step-by-step~explanation:`

To solve for d, we have to move all the terms that do not equal to d to one side of the equation and leave d on the other side.

`\tt Step~1:`

First, subtract n from both sides.

`\tt 9d+n-n=57-n\\9d=57-n`

`\tt Step~2:`

Divide all terms by 9 to get the variable d by itself.

`\tt (9d)/(9) =d\\\\(-n)/(9) =-(n)/(9)\\\\(57)/(9)=6(1)/(3) ~or~(19)/(3) \\\\d=-(n)/(9) +(19)/(3)`

`\Large\boxed{\tt Our~final~answer:~d=-(n)/(9) +(19)/(3) }`