Find the greatest common factor of 30 and 105. 3 15 30 5

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1