5х+(х+25)=74
5х+х+25=74
6х+25=74
6х=74-25
6х=49
х=49:6
х= 8,1(6)
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5х+(х+25)=74
5х+х+25=74
6х+25=74
6х=74-25
6х=49
х=49:6
х= 8,1(6)