-log(1.2 X 10^-5 M H(+))
= 4.9 pH H(+)
4.8
No
x = 3 and y = 2
the empty set.
645375
105
4.8
No
-5x + x + 9 = -4x + 12 -4x + 9 = -4x + 12 9 = 12 This equation has no solution.
(x, y) = (3, 7) is a solution.
x = 3 and y = 2
the empty set.
645375
70000000y=35t
Both of them are equations!The solution is (x, y) = (2, 1).
It's an equation and its solution is: x = -12
If you mean: 7x+21 = 105 Then the solution is: x = 12