20. Solve: 5x + 8(2x-9) = 54
Find the square root hy divisio
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5x + 8(2x - 9) = 54
⇒ 5x + 8(2x) - 8(9) = 54
⇒ 5x + 16x - 72 = 54
⇒ 21x - 72 = 54
⇒ 21x = 54 + 72
⇒ 21x = 126
⇒ x = 126/21
⇒ x = 6
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