Answer:
r = 6.5
Step-by-step explanation:
Set up an equation:
- "Eight is" means 8 equals
- "5 less than" means minus 5
- "twice the number r" means r times 2
Therefore, the equation is 8 = 2r - 5
Solve:
8 = 2r - 5
Add 5 on both sides:
8 = 2r - 5
+5 +5
13 = 2r
Divide by 2 on both sides:
13 = 2r
/2 /2
6.5 = r
