A number minus 3 is 5. write and solve an equation to find the missing number

a number can be written a "x".

"minus" is a key word for subtraction.

"is" is a key word for =.

So if we put that all together, we have

x-3=5

To solve it, we have to add 3, to cancel it out, and add 3 to 5.

x-3=5

+3 +3

x=8

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hope it helps

answer: -8.2562234e+13