4. Solve Problems Using Angle Relationships
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Use the fact that 125^(∘) and (5x+30)^(∘) are vertical angles.
x=19^(∘)
Consider the given diagram
LHS-30=RHS-30
Subtract term
.LHS /5.=.RHS /5.
Cross out common factors
Cancel out common factors
Calculate quotient
Rearrange equation