I\'m thinking of a number that, when you mulitiply it by 9, itis the same as add

Question

I'm thinking of a number that, when you mulitiply it by 9, itis the same as adding 8 to 7 times the number. What is thenumber? I come of with 9x= 8+ 7x and -7 to both sides which is 9x-7x=8 2x/2=8/2 x=4 This is what I get and I don't know if this is correct. I'm thinking of a number that, when you mulitiply it by 9, itis the same as adding 8 to 7 times the number. What is thenumber? I come of with 9x= 8+ 7x and -7 to both sides which is 9x-7x=8 2x/2=8/2 x=4 This is what I get and I don't know if this is correct.

Explanation / Answer

I'm thinking of a number that, when you mulitiply it by 9, itis the same as adding 8 to 7 times the number. What is thenumber? I come of with 9x= 8+ 7x and -7 to both sides which is 9x-7x=8 2x/2=8/2 x=4 This is what I get and I don't know if this is correct.

you did it correctly.
I would have done it this way
x=the number
9x=7x+8        9 times thenumber is the same as adding 7 to 8 times the number
9x-7x=8
2x=8
x=4

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