What is the value of x in the equation 0.25 open brackets 3x - 4 close brackets - 0.5x equals 2.75 A. 27 B. 15 C. 7 D. 3?

1 Answer

Answer :

Work it through, doing the same thing to both sides:0.25(3x - 4) - 0.5x = 2.75[Multiply both sides by 4]→ 4 × (0.25(3x - 4) - 0.5x) = 4 × (2.75)→ 4 × 0.25(3x - 4) - 4 × 0.5x = 4 × 2.75→ 3x - 4 - 2x = 11[simplify the left by collecting the x's together; the right isas simple as it can be]→ 3x - 2x - 4 = 11→ (3 - 2)x - 4 = 11→ x - 4 = 11[Add 4 to both sides]→ (x - 4) + 4 = (11) + 4→ x - 4 + 4 = 11 + 4→ x = 15→ Solution is B. 15

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