Tìm x thuộc Q
a) 2/3 x = -4/27
b) 1/3 + 1/2 : x = -4
c) 3/4 + 1/4 : x = 2/5
Tìm x thuộc Q a) 2/3 x = -4/27 b) 1/3 + 1/2 : x = -4 c) 3/4 + 1/4 : x = 2/5
By Natalia
By Natalia
Tìm x thuộc Q
a) 2/3 x = -4/27
b) 1/3 + 1/2 : x = -4
c) 3/4 + 1/4 : x = 2/5
a,`2/3 x = (-4)/27`
`x = (-4)/27 : 2/3`
`x = (-4)/27 . 3/2`
`x = (-2)/9`
b, `1/3 + 1/2 : x = -4`
`1/2 : x = -4 – 1/3`
`1/2 : x = (-12)/3 – 1/3`
`1/2 : x = (-13)/3`
`x = 1/2 : (-13)/3`
`x = 1/2 . (-3)/13`
`x = (-3)/26`
c, `3/4 + 1/4 : x = 2/5`
`1/4 : x = 2/5 – 3/4`
`1/4 : x = (-7)/20`
`x = 1/4 : (-7)/20`
`x = (-5)/7`
HỌC TỐT NHA !
#NOCOPY
#Sâu
a) 2/3 x = -4/27
x = -4/27 : 2/3
x = -2/9
b) 1/3 + 1/2 : x = -4
1/2 : x = -4 – 1/3
1/2 : x = -13/3
x = 1/2 : (-13/3)
x = -3/26
c) 3/4 + 1/4 : x = 2/5
1/4 : x = 2/5 – 3/4
1/4 : x = -7/20
x = 1/4 : (-7/20)
x = -5/7
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