№ 4.1 а) 3x = 6 б)1/3x = -5 в) -2x = 12 г) 3/7x = 9 № 4.7 б) -2(x-5) +3(x-4)= 4x+1 в)3(x-1)= 2(x+2) г)3(x-5) - 2( x +4) = -5x+1
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