Answer:
x = 15
Step-by-step explanation:
Step 1: Set up the equation.
- [tex]3x + 18 + 6x - 16 + 43 = 180[/tex]
Step 2: Simplify both sides of the equation.
- [tex](3x+6x)+(18-16+43)=180[/tex]
- [tex]9x + 45 = 180[/tex]
Step 3: Subtract 45 from both sides.
- [tex]9x + 45 - 45 = 180 - 45[/tex]
- [tex]9x = 136[/tex]
Step 4: Divide both sides by 9.
- [tex]\frac{9x}{9} = \frac{135}{9}[/tex]
- [tex]x = 15[/tex]
