Question

Решите уравнения. 6кл.
-81+х/2=0 и x/2-5x=0

Answer 1

12x=81
x=81÷12
x=81×21
x=81×2
x=162

(1-2×5)2×x=0
(1-10)2×x=0
-92×x=0
-92×x=0
x=0