Please help me with my math

[tex] \sf{\qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
Let's solve for x and z ~
[tex]\qquad \sf \dashrightarrow \: z + 68 = 180[/tex]
[ they form co - exterior angle pair ]
[tex]\qquad \sf \dashrightarrow \: z = 180 - 68[/tex]
[tex]\qquad \sf \dashrightarrow \: z = 112 \degree[/tex]
now, it's time for x :
First angle z is equal to its vertical opposite angle, and then that angle forms co - interior angle pair with (3x - 28)
[tex]\qquad \sf \dashrightarrow \: 3x - 28 + 112 = 180[/tex]
[tex]\qquad \sf \dashrightarrow \: 3x + 84 = 180[/tex]
[tex]\qquad \sf \dashrightarrow \: 3x = 180 - 84[/tex]
[tex]\qquad \sf \dashrightarrow \: 3x = 96[/tex]
[tex]\qquad \sf \dashrightarrow \: x = 96 \div 3[/tex]
[tex]\qquad \sf \dashrightarrow \: x = 32 \degree[/tex]
That's all... let me know if you have questions ~