Simplifying 
23 + 45 + -48 + 34x = 292
Combine like terms: 23 + 45 = 68 
68 + -48 + 34x = 292 
Combine like terms: 68 + -48 = 20 
20 + 34x = 292
Solving 
20 + 34x = 292
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right
Add '-20' to each side of the equation. 
20 + -20 + 34x = 292 + -20
Combine like terms: 20 + -20 = 0 
0 + 34x = 292 + -20 
34x = 292 + -20
Combine like terms: 
292 + -20 = 272 34x = 272 
Divide each side by '34'. 
x = 8
Simplifying x = 8
Hope it helped : )