11. cuz 5+6=11
X=5, x+6, 5+6=11
35
(x+5)(x+6) equals x^2 +11x+30
59
144
144
49 plus 56 plus 112 equals 217.
This equation is not possible. Two plus three plus four plus five does not equal 287. The system has no solution.
Yes, indeed. Any which way you add the numbers both will equal up to 15. Thus it is true.
5
No.
6+6 equals 12. easy