80... subtracting a negative is the same as adding a positive.
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you minus the two sets of # first then find out what "a" is always the # after the = minus the # before "a" 30 + a = 50 a = 50 - 30 a = 20 30-30=50-30 (50-30=20) 0+a=20 a=20 if a = 20 30+a=50 30+20=50 50=50 therefore a=20
30% of 50 = 50*30/100 = 15
50% of 30= 50% * 30= 0.5 * 30= 15
50 - 20 = 30
-50
30% of 50 = 15
what is the answer of 30 percent of 50
50/100 x 30/100 = 15%
15 out of 50 = 15/50 = 30/100 = 30%
30/50 = 3/5
80