Z.1 Dporowadź do najprostszej postaci.
-7 (2a+3b)-9 (a-2b)-3 (3a+4b)
Z.2 Doprowadź do najprostszej postaci.
1 1/2 (2a-3b-c)- 2 1/2 (a-2b+c)
Z.3 Doprowadź do najprostszej postaci.
-1,3 (-2a+3b)- 2,1 (a-2b)- 0,5 (5a-2b)
Daje naj. :P
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-14a-21b-9a+18b-9a-12b = -32a-15b
3a-4,5b-1,5c-2,5a+5b-2,5c = 0,5a+0,5b-4c
2,6a - 3,9b - 2,1a + 4,2b - 2,5a + b = 2a + 1,3b