0.12.Решите уравнение 1)x+9/7=1-x+1/3; 2)1-5x-2/6=x-5/9; 3)3x+4/5+x-7/2=2 (2x+3)/5; 4)7x-3/2-9-4x/3=7-x/2 помагите пожалуйста!​
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