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7. If mZEBH = 6x + 12 and m/HBC = 8x10, find mZEBH.
8. If mLABF = 7b - 24 and mZABE = 2b, find mZEBF.
9. If mZEBC= 31a - 2 and mZEBH = 4a + 45, find mZHBC.
10. If mLABF = 8w - 6 and mZABE = 2(w + 11), find mZEBF.