December 2018 1 8 Report
Zredujuj:
1. 3x-2y+2a-x-3y-4a
2. 5k+3m-3k+4m-k-7m
3. 11z+12w-9z-3w+11w-8z
4. 3(a+2b)+4(3a-b)-2(2a+1)
5. 5(m-1)-3(n+2)+4(m-n)
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