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Answer:
   x = 19
   A = 30°
   B = C = 75°
Step-by-step explanation:
In an isosceles triangle, the angles opposite the congruent sides have the same measures.
   A = B
   3x +18 = 7x -58
   76 = 4x . . . . . . . . add 58-4x
   19 = x . . . . . . . . . divide by 4
Then the equal angles measure ...
   A = B = 3(19) +18 = 75
   C = 2(19) -8 = 30
Angles A, B, C measure 75°, 75°, 30°, respectively.
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<em>Alternate solution</em>
The sum of angles in a triangle is 180°, so you could write ...
   (3x +18) +(7x -58) +(2x -8) = 180
   12x = 228 . . . . . add 48
   x = 19 . . . . . divide by 12
 
        
             
        
        
        
You would use the equation 
F+V=E+2
        
                    
             
        
        
        
Answer:
Obviously condensation
Step-by-step explanation: because it is
 
        
             
        
        
        
x + 1/2 = 3/4
set denominators equal:
x + 2/4 = 3/4
-2/4 for both sides:
x = 1/4
there you go! hope this helps!