8с-1*5=235 4n+12:8=136

Question

8с-1*5=235 4n+12:8=136

Answer 1

8с-1*5=235.
8с-5=235.
8с=235+5.
8с=240.
с=240:8.
с=30.
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4n+12:8=136.
4n+1,5=136.
4n=136-1,5.
4n=134,5.
n=134,5:4.
n=34