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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?
Wiki User
∙ 6y ago
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 is as 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
Wiki User
∙ 6y ago
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