Add, subtract, multiply, or divide the following fractions. Remember to find the LCD first.
10. 1/5+1/7+3/21=
11. 1/4+2/5+1/3=
12. 3/4-1/6=
13. 10/17-6/17=
14. 12/25x5/6x3/4=
15. 13/7x49/2x4/39=
16. 11/15x3/5x25/7=
17. 10/7/4/7=
18. 3/4/5/7=

What is the perimeter of square abcd? units units 28 units 37 units

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.