When evaluating, you must combine like terms first, so subtract 4 from 1/2 then multiply that number by -7/4, this will give you the value of x.
Answer:

Step-by-step explanation:
Given the algebraic equation,
, and that we must solve for <em>z</em><em> </em>:
The first step is to multiply both sides by 4 to eliminate the fraction on the right-hand side of the equation:


4x = 3yz²
Next, divide both sides by 3y:


Lastly, take the square root of both sides to isolate the variable, <em>z </em>:


Therefore, the equation for z is: 
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Answer:
Step-by-step explanation:
Angle EGD = x (vert. opp. angles)
30 ° + 90 ° + x = 180 ° (adj. angles on st. line)
x = 60