Решите уравнения : 1) 2x-1,2=0,4 2) 2: (х-1,2) =-0,4 3) 0,5-1,2х=1,1

4) 4,2×(0,25+х) =1,47 5) 4,8у-3,1=-6,7

6) (0,2у-4,5):7=-1,2
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