It is: (5*12)-2 = 58
58
It is then 5 times 12+(-2) = 58
15
5
15
29
The expression h + 56 can't be simplified. If you assign a value to h, you can calculate the sum.
It is 5*12 - 2 = 58.
It is: 16-(3*4) = 4
12. Absolute value basically means to take off the negative sign of the expression, if there is a negative sign.
To calcualte NCV you need calorific value on GAR, H on gar and Total moisture.
Litmus paper or you could measure the number of H+ ions