Question

Решите уровнения 2, 4

Answer 1

2) 15.8-0.01х=3*4
15.8-0.01х=12
-0.01х=12-15.8
-0.01х=-3.8
х=-3.8:(-0.01)
х=380

4)100х+4.6=3*5
100х+4.6=15
100х=15-4.6
100х=10.4
х=10.4:100
х=0.104