Answer: x = 15
Explanation:
Since they are similar, corresponding angles are equal
m∠A = m∠E
m∠B = m∠F
m∠C = m∠G
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m∠B = m∠F:
x - 5 = 2/3 x
Solve for x
1/3 x - 5 = 0
1/3 x = 5
x = 15