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Solve the following equations:i. 6x – 1 = 3x + 8 ii. 2(x – 4) = 4x + 2 iii. 5(x + 1) = 74 |
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Answer» i. 6x – 1 = 3x + 8 ∴ 6x - 3x = 8 + 1 ∴ 3x = 9 ∴ x = 9/3 ∴ x = 3 ii. 2(x - 4) = 4x + 2 ∴ 2x - 8 = 4x + 2 ∴ (-8 - 2) = 4x - 2x ∴ (-10) = 2x ∴ x = (-10/2) ∴ x = -5 iii. 5(x + 1) = 74 ∴ 5x + 5 = 74 ∴ 5x = 74 - 5 ∴ 5x = 69 ∴ x = 69/5 |
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