Ответ:
1)(5b+4b)-(8a+a)=9b-9a=9(b-a)
2)(1.8a+2.8a)+(1.9b-2.9b)=4.6a-b
3)3p-(-8p+5p)=8p-2p
11p-2p=8p-2p
11p-2p-8p+4p=5
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Ответ:
1)(5b+4b)-(8a+a)=9b-9a=9(b-a)
2)(1.8a+2.8a)+(1.9b-2.9b)=4.6a-b
3)3p-(-8p+5p)=8p-2p
11p-2p=8p-2p
11p-2p-8p+4p=5