1) 3х=48
х=16
2) 16х=80
х=5
3) 21=х+2
-x=2-21
-x=-19
x=19
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Answers & Comments
1) 3х=48
х=16
2) 16х=80
х=5
3) 21=х+2
-x=2-21
-x=-19
x=19