Tìm x
1) 3/4 x 2/3 = -5/12
2) 3/4 x -3/5 = 1/2
3) 2/5 + x = 7/3
4) 3/12 x + 3/4 = 1/6
5) 7/4 – x = -₁7/8
Tìm x 1) 3/4 x 2/3 = -5/12 2) 3/4 x -3/5 = 1/2 3) 2/5 + x = 7/3 4) 3/12 x + 3/4 = 1/6 5) 7/4 – x = -₁7/8
By Liliana
By Liliana
Tìm x
1) 3/4 x 2/3 = -5/12
2) 3/4 x -3/5 = 1/2
3) 2/5 + x = 7/3
4) 3/12 x + 3/4 = 1/6
5) 7/4 – x = -₁7/8
1) `3/4 x × 2/3 = -5/12`
`3/4 x = -5/8`
`x=-5/6`
2) `3/4 x – 3/5 = 1/2`
`3/4 x = 11/10`
`x=22/15`
3) `2/5 + x = 7/3`
`x=29/15`
4) `3/12 x + 3/4 = 1/6`
`1/4 x= -7/12`
`x= -7/3`
5) `7/4 – x = (7/8)/1`
`x= 7/4 -7/8`
`x=7/8`
`1,3/4x * 2/3=-5/12`
`<=>3/4x = -5/12 : 2/3`
`<=>3/4x = -5/8`
`<=>x=-5/6`
`2, 3/4x -3/5= 1/2`
`<=>3/4x=1/2+3/5`
`<=>3/4x=11/10`
`<=>x=22/15`
`3,2/5 +x=7/3`
`<=>x=7/3-2/5`
`<=>x=29/15`
`4,3/12x -3/4=1/6`
`<=>3/12x=1/6+3/4`
`<=>3/12x=11/12`
`<=>x=11/3`
`5,7/4-x=(7/8)/1`
`<=>x=7/4-(7/8)/1`
`<=>x=7/8`
Vậy ………..