a)$\frac{5}{7}$x=1$\frac{1}{8}$-$(0,5)^{3}$ b)x-25%x-1=-/5/

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1. `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`

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