Given: [tex]\textsf{45 + x = 75}[/tex]
Need: [tex]\textsf{The value of the unknown x}[/tex]
Solution: In order to solve for the unknown we must subtract 45 from both sides which would isolate x and given us the value.
Subtract 45 from both sides
- [tex]\textsf{45 - 45 + x = 75 - 45}[/tex]
- [tex]\textsf{x = 75 - 45}[/tex]
- [tex]\textsf{x = 30}[/tex]
After simplifying the expression we were able to determine that x is equal to 30.
