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Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is

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Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is  [#permalink]

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New post 19 Nov 2019, 02:06
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58% (01:37) correct 42% (01:50) wrong based on 33 sessions

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Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is  [#permalink]

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New post 19 Nov 2019, 03:16
Does 7x = 14 + 2x or \(5x=14\) or \(x=\frac{14}{5}=2.8\)?

(1) -3x is greater than or equal to -9......\(-3x\geq{-9}.......3x\leq{9}.......x\leq{3}\). Can be 2.8 or 1 or 2....Insuff

(2) 2x is greater than or equal to 6.........\(2x\geq{6}........x\geq{3}\). This means \(x\neq{2.8}\)......Suff

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Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is  [#permalink]

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New post 19 Nov 2019, 03:55
Quote:
Does 7x = 14 + 2x?

(1) -3x is greater than or equal to -9.
(2) 2x is greater than or equal to 6.


7x=14+2x…5x=14…x=2.8?

(1) -3x is greater than or equal to -9. sufic
-3x≥-9…x≤3

(2) 2x is greater than or equal to 6. sufic
2x≥6…x≥3…answer=no.

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Does 7x = 14 + 2x? (1) -3x is greater than or equal to -9. (2) 2x is   [#permalink] 19 Nov 2019, 03:55
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