2012
Mathematics
67ca00ce0c643c71d77dee1f
If 27x+2 ÷ 9x+1 = 32x, find x.
A.
3
B.
4
C.
5
D.
6
Correct Answer: 4
Explanation
27x+2 ÷ 9x+1 = 32x, 33(x+2) ÷ 32(x+1) =32x 33x+6 ÷ 32x+2 = 32x ∴ (3x + 6) − (2x + 2) = 2x x + 4 = 2x ⟹ x = 4
27x+2 ÷ 9x+1 = 32x, 33(x+2) ÷ 32(x+1) =32x 33x+6 ÷ 32x+2 = 32x ∴ (3x + 6) − (2x + 2) = 2x x + 4 = 2x ⟹ x = 4THIS WEEK's
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