1. What is 2+2?
2.What is 4+4?
3.What is 6+6?

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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