9+13у=35+26у
9с+2.65=36.85-9с
5=-1-(3-9х)
9-(8х-11)=12
12=(7х-9)-(11-х)
11х+103=1+(12х-31)
9с+2.65=36.85-9с
5=-1-(3-9х)
9-(8х-11)=12
12=(7х-9)-(11-х)
11х+103=1+(12х-31)
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Answers & Comments
9-35=26у-13у
-26=13у
у=-26:13
у=-2
9с+2.65=36.85-9с
9с+9с=36.85-2.65
18с=34.2
с=34.2:18
с=1.9
5=-1-(3-9х)
5=-1-3+9х
5+3+1=9х
9х=9
х=9:9
х=1
9-(8х-11)=12
9-8х+11=12
9+11-12=8х
8х=8
х=8:8
х=1
12=(7х-9)-(11-х)
12=7х-9-11+х
12+11+9=8х
8х=32
х=32:8
х=4
11х+103=1+(12х-31)
11х+103=1+12х-31
103-1+31=12х-11х
х=103+30
х=133