7(х-1)+2(х+3)=7-х
7х-7+2х+6-7+х=0
10х-8=0
10х=8
х=8÷10
х=0.8
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7(х-1)+2(х+3)=7-х
7х-7+2х+6-7+х=0
10х-8=0
10х=8
х=8÷10
х=0.8