ok i got this
2r-5=11
We simplify the equation to the form, which is simple to understand
2r-5=11
We move all terms containing r to the left and all other terms to the right.
+2r=+11+5
We simplify left and right side of the equation.
+2r=+16
We divide both sides of the equation by 2 to get r.
r=8
