plese help me fast I will mark you brainlist

[tex]\\ \sf\longmapsto 5x+5+4x-5=180[/tex]
[tex]\\ \sf\longmapsto 5x+4x+5-5=180[/tex]
[tex]\\ \sf\longmapsto 9x=180[/tex]
[tex]\\ \sf\longmapsto x=\dfrac{180}{9}[/tex]
[tex]\\ \sf\longmapsto x=20[/tex]
Step-by-step explanation:
hope this helps u ✌️✌️
Make mister as brainliest