How do you solve #1= \frac { r + 1} { 10}#?

1 Answer
Brandon
Jan 30, 2018

#r=9#

Explanation:

assuming you mean solve to find r

To start off, we do not want anything to be divided, so the opposite of dividing is multiplying, we multiply the given value of the equation (1) by 10. What we do to one side we must do to the other...

#1 xx 10=10#

Putting these values back in, getting rid of the previous ones gets us...

#10=r+1#

As we want #r# on its own, we need to get rid of the constant of +1, therefore to do this we do the opposite, which is to -1. Remember; what we do to one side we must do to another. Therefore -1 from both sides.

#10-1=9#

#1-1=0# Therefore it gets rid of the 1 on the side with the r on it.

This leaves us with...

#r=9#

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