Ответ:
1)103х-(44х+18х)=103х-44х-18х=41х
3)326х+(17х-14х)=326х+17х-14х=329х
5)35а+18+15а+11=50а+29
7)12у+у+52+8+3=13у+63
2)276m-(172m+14m)=276m-172m-14m=90m
4)262+(132-52)+2=262+132-52+2==344
6)42x+45+8x+45=50x+90
8)204b+30b+6+56=234b+62
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Ответ:
1)103х-(44х+18х)=103х-44х-18х=41х
3)326х+(17х-14х)=326х+17х-14х=329х
5)35а+18+15а+11=50а+29
7)12у+у+52+8+3=13у+63
2)276m-(172m+14m)=276m-172m-14m=90m
4)262+(132-52)+2=262+132-52+2==344
6)42x+45+8x+45=50x+90
8)204b+30b+6+56=234b+62