Complete. 5. m26 + m2 7 + m2 8 = ? 6. If m 26 = 52 and m2 11 = 82, then m27 - - 7. If m 26 = 55 and m 2 10 = 150, then m 28 - - 8. If m 26 = x, m2 7 = x - 20, and m211 = 80, then x = _? 9. If m 2 8 = 4x, m 2 7 = 30, and m 29 = 6x - 20, then x = ? 10.
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