Найдите корень уравнения:
а) 4х - 8 = 3х + 6
б) 5/7x + 6/7 = 4/7x
в) 0,9y−0,6=0,5y+0,4
г) 4/5z = 3/4z - 1/2
Даю 12 баллов!!!
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