Toán Lớp 5: a) 30% × x = 0,6 + 1,56 b) x : 80% + 1,8 = 20 : 0,5
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Toán Lớp 5: a) 30% × x = 0,6 + 1,56 b) x : 80% + 1,8 = 20 : 0,5
Comments ( 2 )
a)30%xx x=0,6+1,56
30%xx x=2,16
x=2,16:30%
x=7,2
b)x:80%+1,8=20:0,5
x:80%+1,8=40
x:80%=40-1.8
x:80%=38,2
x=38,2xx80%
x=30,56
a)
30%x X=0,6+1,56
0,3x X=2,16
x=2,16:0,3
x=7,2
b)x:80%+1,8=20:0,5
x:0,8+1,8=40
x:0,8=40-1,8
x:0,8=38,2
x=38,2×0,8
x=30,56