You have not written that equation correctly. 5 x 2 is 10, and 10 - 9 is one, not zero. Possibly you intended to write something such as 5x + 2 - 9 = 0, in which case you would have an equation that could be solved.
5x + 2 - 9 = 0
5x - 7 = 0
5x = 7
x = 7/5 = 1.4
15 percent 0 equals 0; 0 percent 15 equals 0. Both the above are true
yes
maybe
0 it equals 0
For y - 2y - 3y equals 0, y equals 0.
15 percent 0 equals 0; 0 percent 15 equals 0. Both the above are true
yes
0
0
maybe
It equals 0.
It equals 0
x=0
0 it equals 0
For y - 2y - 3y equals 0, y equals 0.
2sinx+1 equals 0
Simply put, No.