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- Prove that the following are equivalent by using rules of replacement (picture attached)This is my only atttemptIn ΔFGH, start overline, F, H, end overlineFH is extended through point H to point I, m, angle, F, G, H, equals, left bracket, 3, x, plus, 3, right bracket, degreesm∠FGH=(3x+3)∘, m, angle, H, F, G, equals, left bracket, 3, x, plus, 18, right bracket, degreesm∠HFG=(3x+18)∘, and m, angle, G, H, I, equals, left bracket, 9, x, minus, 6, right bracket, degreesm∠GHI=(9x−6)∘. Find m, angle, H, F, G, .m∠HFG