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100 - x
x=1500
b)2100
c)10000
d)3200
1⅔ * x = 25 / : 1⅔
x = 15
b.
4 3/7 * x = 93 / : 4 3/7
x = 21
c.
3 ⅗ * x = 360 / : 3 ⅗
x = 100
d.
4 ⅜ * x = 140 / : 4 ⅜
x = 32
:)
1 ⅔=25
1=x
25=1 ⅔x /1 ⅔
15=x
odp:15
b)
4 3/7=93
1=x
93=4 3/7x /4 3/7
21=x
odp:21
c)
3 ⅗=360
1=x
360=3 ⅗x /3 ⅗
100=x
odp:100
d)
4 ⅜=140
1=x
4 ⅜x =140 /4 ⅜
x=32
odp:32