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To solve the equation ( )° + 4x° = 90°, we need to find the value of x. Since we do not have any specific values or information for the blank symbol, we cannot determine a specific solution for x. However, we can still solve for x in terms of the blank symbol.
To do this, we can isolate 4x° by subtracting the blank symbol from both sides of the equation:
( )° + 4x° - ( )° = 90° - ( )°
This simplifies to:
4x° = 90° - ( )°
Next, we can divide both sides of the equation by 4:
4x° / 4 = (90° - ( )°) / 4
This gives us:
x° = (90° - ( )°) / 4
Therefore, the solution for x in terms of the blank symbol is x° = (90° - ( )°) / 4.