21/1.5=14
14 years to erode
Answer:
yea sorry bud i dont know about this one maybe try doing it yourself
Step-by-step explanation:
All of the box numbers are decide by the bottom numbers. Ex: 3+4=7, the top box is seven above 3 and 4. So you would add 16 and 17 which is 33. The answer is 33.
1.<em> no solution</em>
2.<em> one solution</em>
3.<em> infinitely many solutions</em>
4. <em>infinitely many solutions</em>
5.<em> no solution</em>
6.<em> one solution</em>
