1) 7 – 2x = 18 – 3x 2) 3 . ( x + 5 ) – x – 11 = 24 30/11/2021 Bởi Genesis 1) 7 – 2x = 18 – 3x 2) 3 . ( x + 5 ) – x – 11 = 24
`1) 7-2x=18-3x` `-2x+3x=18-7` `x=11` `2) 3.(x+5)-x-11=24` `3x+15-x-11=24` `2x+4=24` `2x=24-4` `2x=20` `x=20:2` `x=10` Chúc học tốt! Bình luận
1) 7 – 2x = 18 – 3x 3x-2x=18-7 vậy x=11 2) 3 . ( x + 5 ) – x – 11 = 24 3x+15-x-11=24 2x+4=24 2x=24-4 2x=20 x=20:2 x=10 vậy x=10 Bình luận
`1) 7-2x=18-3x`
`-2x+3x=18-7`
`x=11`
`2) 3.(x+5)-x-11=24`
`3x+15-x-11=24`
`2x+4=24`
`2x=24-4`
`2x=20`
`x=20:2`
`x=10`
Chúc học tốt!
1) 7 – 2x = 18 – 3x
3x-2x=18-7
vậy x=11
2) 3 . ( x + 5 ) – x – 11 = 24
3x+15-x-11=24
2x+4=24
2x=24-4
2x=20
x=20:2
x=10
vậy x=10