x + 12 = 38.
Subtract 12 from 38, getting 26.
The 12 goes away because you subtracted it.
x = 26, it cannot equal ten.
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12 + 10 + 11 equals 33
- log(2.3 X 10 -12 ) = 11.6 pH -----------------very little H + concentration in this solution.
4.8
No
It is: 12+(-4)-(-10) = 18