What number does x stand for in this equation? -7x + 6= 27
A
21
B
2
C
-3
D
-7

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

Julian wrote the following numeric pattern on the board3,10,17,24,31,38.what numbers of julian's pattern are compound numbers.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document