Question

A pan balance has 3cubes on one pan and 11 cubes on the other pan. Lucy thinks she should add 7,8,9 or 10 cubes to make the pans balance how can you use the equation 3+c=11 to find the number of cubes lucy should add

Answer 1

c = 8

Explanation:

Solve for C

3 + c = 11. subtract 3 from both sides

c = 8

Answer 2

8

Explanation:

3+c = 11

c = 11-3

c=8