1. Розв'яжи рiвняння.
а) x-6/7x=3
б) k-5/4k=3/7
в) z-2/9z=2 2/3
г) (5,2c+c)×0,5=9,3
ПОМОГИТЕ ПОЖАЛУЙСТА ДАЮ 70 БАЛОВ!!!!!​
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