1)-4a+12a+13a-27a=-6a
2)4,2x-4,8x-6,3x-2,4x=-9,3x
3)-17x+19y-15y+13x=-4x+4y
4)0,9n-0,8m-0,7m+3,5n-1,9n=2,5n-1,5m
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1)-4x-8(9-2x)=-4x-72+16x=12x-72
4)-7(3-4c)+14(0,5+2c)=-21+28c+7+28c=-14+56c
3)6(3x-2)+4(5x-1)=18x-12+20x-4=38x-16
5)3(2,1x-y)-2,8(2x-3y)=6,3x-3y-5,6x+8,4y=0,7x+5,4y
6)0,4(8t+7)-1,6(2t-3)=3,2t+2,8-3,2t+4,8=7,6
2)1/3(12-2,1y)+0,3y=4-0,7y+0,3y=4-0,4y
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