Uprość wyrażenie: a)6(a+2b)-3(2a-3b) b)4(b+3)+3(a-b) c)7 (b+c)-3 (b+2c) d)5(a+3)+2b-3(a+b)
6[a+2b]-3[2a-3b]=6a+12b-6a+9b=21b4[b+3]+3[a-b]=4b+12+3a-3b=b+3a+127[b+c]-3[b+2c]=7b+7c-3b-6c=4b+c5[a+3]+2b-3[a+b]=5a+15+2b-3a-3b=2a-b+15
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6[a+2b]-3[2a-3b]=6a+12b-6a+9b=21b
4[b+3]+3[a-b]=4b+12+3a-3b=b+3a+12
7[b+c]-3[b+2c]=7b+7c-3b-6c=4b+c
5[a+3]+2b-3[a+b]=5a+15+2b-3a-3b=2a-b+15