0,8(4*2+3*9(-30))-6(0,4*2+0,8*(-3))=8,8
0,8(4a+3b)-6(0,4a+0,8b) = 3,2a+2,4b-2,4a-4,8b = 0,6a-2,4b = 0,6(a-4b) = 0,6(2+12) = 0,6*14 = 8,4
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0,8(4*2+3*9(-30))-6(0,4*2+0,8*(-3))=8,8
0,8(4a+3b)-6(0,4a+0,8b) = 3,2a+2,4b-2,4a-4,8b = 0,6a-2,4b = 0,6(a-4b) = 0,6(2+12) = 0,6*14 = 8,4