Pls help I need for this question sorry for bad English

Answer:
x=8
Step-by-step explanation:
180°= 58 + 46+ 8x+12 u add 58+46+12= 116 180-116= 64 8x=64 ÷8 x=8
Answer:
X=56
Step-by-step explanation:
I first added 8x+12 then the others after I got my Answer of 124 I subtracted 180-124 to get 56 if it is wrong I am sorry