a)$\frac{5}{7}$x=1$\frac{1}{8}$-$(0,5)^{3}$ b)x-25%x-1=-/5/ 15/08/2021 Bởi Serenity a)$\frac{5}{7}$x=1$\frac{1}{8}$-$(0,5)^{3}$ b)x-25%x-1=-/5/
`5/7 x=1 1/8 – (0,5)^3` `⇔5/7 x=1+1/8-1/8` `⇔5/7 x=1` `⇔x=7/5` `x-25%x-1=-//5//` `⇔3/4x-1=-//5//` `⇔1-3/4x=5` `⇔3/4x=-4` `⇔x=-(16)/3` Bình luận
`5/7 x=1 1/8 – (0,5)^3`
`⇔5/7 x=1+1/8-1/8`
`⇔5/7 x=1`
`⇔x=7/5`
`x-25%x-1=-//5//`
`⇔3/4x-1=-//5//`
`⇔1-3/4x=5`
`⇔3/4x=-4`
`⇔x=-(16)/3`