It would be (0,-4).
If you do 9(0) + 7(-4) it would be 0 + -28 which equals -28.
It is difficult because prime numbers are numbers with no factors. There's not many. A lot of one digit numbers are prime and odd numbers but after 2, all of the even whole numbers are composite and some odds past 100 (and some before 100) are, also
It should be B I’m pretty sure
N+-6=11 Write the original equation.
+6 +6 Add 6 to both sides.
N=17 This is the answer.
20, you have ten pencils but bring ten more count them all.
