Answer:
Here,
LB=7701 3
degrees
Get rid of b:
3a+b-2=b
3a-2=0
3a=2
A=2/3
x = 88
Step-by-step explanation:
The sum of the angles in a triangle add to 180
47+45 +x = 180
Combine like terms
92+x = 180
Subtract 92 from each side
92+x-92= 180-92
x =88