Answer:
x = 6
Step-by-step explanation:
50x + 45 = 345
=> 50x = 300
=> x = 6
Hoped this helped.
[tex]\sf \longmapsto \: 50x + 45 = 345[/tex]
[tex]\sf \longmapsto50x = 345 - 45[/tex]
[tex]\sf \longmapsto50x = 300[/tex]
[tex]\sf \longmapsto \: x = \dfrac{300}{50}[/tex]
[tex]\sf \longmapsto \: x = 6[/tex]