0,6 (а+1,5b-2) = 0,6a + 0,9ab - 1,2;
-n (3m-2x+3) = -3mn + 2xn - 3n;
-(y-a)-(n-a) = -y + a - n + 2 = 2a - n - y;
4 (2x-4b-3) = 8x - 16b - 12 ;
-2,5 (4x+2y-6) = -10x - 5y + 15
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Answers & Comments
0,6 (а+1,5b-2) = 0,6a + 0,9ab - 1,2;
-n (3m-2x+3) = -3mn + 2xn - 3n;
-(y-a)-(n-a) = -y + a - n + 2 = 2a - n - y;
4 (2x-4b-3) = 8x - 16b - 12 ;
-2,5 (4x+2y-6) = -10x - 5y + 15