Упростите пример: (8с–1)*5=235 и (4n+12):8=136

Question

Упростите пример:
(8с–1)*5=235 и (4n+12):8=136

Answer 1

(8с–1)*5=235
40с-5=235
40с=240
с=6
 (4n+12):8=136
4n+12=136*8
4n+12=1088
4n=1088-12
4n=1076
n=269