1)2x+17=22+3x , 2)18+3x=x+14 ,3)25-4x=12-5x ,4)13x+27=16x+4,5 5)21x+45=17+14x ,           6)13x+70=2x+15 , 7)3,4x-4=4,8-x , 8)2x+7=x+5,5 , 9)5-3x=2x-8 10)9,5x+2=5,7x-5,6 ,               11)1,5x+8=3,1x+16 , 12)2,9x+7,4=x+1,7. Решите уравнение    
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