5х-412=88
5х=412+88
5х=500
х=500:5
х=100
147:(х+16)=7
х+16=147:7
х+16=21
х=21-16
х=5
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5х-412=88
5х=412+88
5х=500
х=500:5
х=100
147:(х+16)=7
х+16=147:7
х+16=21
х=21-16
х=5