Question

7r-7=2r+18 please show me how to solve it

Answer 1

First you need to isolate your variable, this means get the r's on to one side so you can equal it to a number

Answer 2

@magy Do you still need help?

Answer 3

7r-7=2r+18

Move the "-7" to the other side of the equal sign. Change the minus sign to a plus sign.

7r=2r+18+7

18+7 is 25. So...

7r=2r+25

Answer 4

yes thank you the answer is 5

Answer 5

You then move the 2r to the other side. 7 r - 2r is 5r so now you have

5r=25

and you divide 5 by r and 25 and you get 5.

Answer 6

Oh okay lol no problem. ^-^