Question

9t +4t -286=0. 14x-9x+88=272. 25x-16x+54=162

Answer 1

9t+4t-286=0
13t-286=0
13t=286
t=286^13
t=22

14х-9х+88=272
14х-9х=272-88
5х=184
х=184:5
х=36.8


25х-16х+54=162
25х-16х=162-54
9х=108
х=108:9
х=12