Explanation:
x=11
hope it helps.
comment me if im correct then i will post step by step
and sorry, if im incorrect.
Answer:
x = 25
Since ∠ A = ∠ B then the triangle is isosceles and AC = BC , that is
4x - 30 = 2x + 20 ( subtract 2x from both sides )
2x - 30 = 20 ( add 30 to both sides )
2x = 50 ( divide both sides by 2 )
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