a) x -1 = ½ : 5
x-1=½*⅕
x-1=1/10
x=1 1/10
b) x - ¼ = 3/2 : 3/5
x-¼=3/2*5/3
x-¼=2/5
x-0,25=0,4
x=0,65
c) x + 2½ = (4⅝ + 6¼) : ½
x+2½=(4⅝+6 2/8):½
x+2½=10 ⅞:½
x+2½=87/8*2
x+2½=21 ¾
x=21¾-2½
x=19 ¼
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a) x -1 = ½ : 5
x-1=½*⅕
x-1=1/10
x=1 1/10
b) x - ¼ = 3/2 : 3/5
x-¼=3/2*5/3
x-¼=2/5
x-0,25=0,4
x=0,65
c) x + 2½ = (4⅝ + 6¼) : ½
x+2½=(4⅝+6 2/8):½
x+2½=10 ⅞:½
x+2½=87/8*2
x+2½=21 ¾
x=21¾-2½
x=19 ¼