Q=2
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7p + 2q = 46 . . . . (A) 5p + 3q = 36 . . . . (B) 3*(A): 21p + 6q = 138 2*(B): 10p + 6q = 72 Subtracting gives 11p = 66 so that p = 6 Substitute for p in (A): 7*6 + 2q = 46 or 42 + 2q = 46 which gives 2q = 4 so that q = 2 Solution: (p, q) = (6,2)
If I am correct, 9 plus 7 equals 112.
This equation is not possible. Two plus three plus four plus five does not equal 287. The system has no solution.
basically you asked what -28+21 which equals -7
59