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1)7х+3=0
2)0,6х-1,8=0
3)8х-5=х-40
4)9+13y=35+26y
5)8y-(7y-2)=
1)7х+3=0
2)0,6х-1,8=0
3)8х-5=х-40
4)9+13y=35+26y
5)8y-(7y-2)=
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Answers & Comments
1) 7х+3=0
7х=-3
х=-3/7
2) 0,6х-1,8=0
0,6х=1,8
х=3
3) 8х-5=х-40
8х-х=5-40
7х=-35
х=-5
4) 9+13y=35+26y
13у-26у=35-9
-13у=26
у=-2
5) 8y-(7y-2)=8у-7у+2=у+2.