173 - 90 = 80
80 minus 4 is 76.
80 minus 12 is 68.
80 minus 12.6 is 67.4
90 - 90 = 0
90.
You subtract 90 degrees minus 80 degrees 25'. Note: You should convert the 90 degrees to 89 degrees and 60 minutes first, that way you can easily subtract degrees and minutes.
30 minus 90 is negative 60, if I'm correct.
90 * 80 = 7,200
80% of 90m = 80% * 90 = 0.8 * 90 = 72m
80% of 90 Euros= 80% * 90 Euros= 0.8 * 90 Euros= 72 Euros
The result of the equation - 90 plus 90 plus 60 plus 80, is found as follows; 90 + 90 + 60 + 80 = ( 90 + 90 ) + 60 + 80 = 180 + ( 60 + 80 ) = 180 + 140 = 320 Answer = 320