а) 5.7-(-1.1) = 5.7+1.1 = 6.8б) (-6.9)-(-10.3) = -6.9+10.3 = 3.4в) -8.75-(+6.25) = -8.75-6.25 = -15г) -3/5-(4/5) = -3/5+(-4/5) = -7/5д) 5/7-(-2/7) = 5/7+2/7 = 7/7 = 1е) 0-(+8/15) = 0-8/15 = -8/15
а) 5.7-(-1.1) = 5.7+1.1 = 6.8
б) (-6.9)-(-10.3) = -6.9+10.3 = 3.4
в) -8.75-(+6.25) = -8.75-6.25 = -15
г) -3/5-(4/5) = -3/5+(-4/5) = -7/5
д) 5/7-(-2/7) = 5/7+2/7 = 7/7 = 1
е) 0-(+8/15) = 0-8/15 = -8/15