-30
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-30. Because subtracting a negative is the same as adding. So it really is -80 + 50, which is -30.
50 and 80 is 130.
The result of the equation - 130 plus 80 plus 50 plus 80, is found as follows;130 + 80 + 50 + 80= ( 130 + 80 ) + 50 + 80= 210 + ( 50 + 80 )= 210 + 130= 340Answer = 340
50 from 80 leaves 30. 50% from 80, which you may have meant, leaves 40.
50/80 x 100 = 62.5 Therefore, 50 is 62.5 percent of 80.
50 from 80 is 100*50/80 = 62.5%