5× x -13=12 3x÷5=(-2)+17 x÷8 phần 11=11 phần 3 20/08/2021 Bởi Katherine 5× x -13=12 3x÷5=(-2)+17 x÷8 phần 11=11 phần 3
`5× x -13=12` `⇔5× x =25` `⇔x=5` `3x:5=(-2)+17` `⇔3x:5=15` `⇔3x=75` `⇔x=25` `x:8/(11)=(11)/3` `⇔x=(11)/3×(8)/(11)` `⇔x=8/3` Bình luận
5*x-13=12 =>5*x=12+13 =>5*x=25 =>x=25/5 =>x=5 3*x/5=(-2)+17 =>3*x/5=15 =>3*x=15/5 =>3*x=3 =>x=3/3 =>x=1 x/8/11=11/3 =>x=11/13*8/11 =>x=88/143 Bình luận
`5× x -13=12`
`⇔5× x =25`
`⇔x=5`
`3x:5=(-2)+17`
`⇔3x:5=15`
`⇔3x=75`
`⇔x=25`
`x:8/(11)=(11)/3`
`⇔x=(11)/3×(8)/(11)`
`⇔x=8/3`
5*x-13=12
=>5*x=12+13
=>5*x=25
=>x=25/5
=>x=5
3*x/5=(-2)+17
=>3*x/5=15
=>3*x=15/5
=>3*x=3
=>x=3/3
=>x=1
x/8/11=11/3
=>x=11/13*8/11
=>x=88/143