Use Desmos the graphing app it's great!
As follows
r-6=7
+6 +6
r= 13
I believe its 31/100! <span>To write 0.3111 as a fraction you have to write 0.3111 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.</span>
