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If x + 2 (3-5x) gt -1 - 2x gt 5 - x//3, ...

If `x + 2 (3-5x) gt -1 - 2x gt 5 - x//3,` then the value of x is (a) -3 (b) -4 (c) 2 (d) 3

A

`-3`

B

`-4`

C

2

D

3

Text Solution

AI Generated Solution

The correct Answer is:
To solve the inequality \( x + 2(3 - 5x) > -1 - 2x > 5 - \frac{x}{3} \), we will break it down into two parts and solve each inequality step by step. ### Step 1: Solve the first part of the inequality We start with the first part of the inequality: \[ x + 2(3 - 5x) > -1 - 2x \] 1. Distribute \( 2 \) in the left side: \[ x + 6 - 10x > -1 - 2x \] 2. Combine like terms: \[ -9x + 6 > -1 - 2x \] 3. Add \( 9x \) to both sides: \[ 6 > 7x - 1 \] 4. Add \( 1 \) to both sides: \[ 7 > 7x \] 5. Divide by \( 7 \): \[ 1 > x \] or \[ x < 1 \] ### Step 2: Solve the second part of the inequality Now we solve the second part: \[ -1 - 2x > 5 - \frac{x}{3} \] 1. Add \( 2x \) to both sides: \[ -1 > 5 + 2x - \frac{x}{3} \] 2. Combine the terms involving \( x \): - Convert \( 2x \) to a fraction: \[ 2x = \frac{6x}{3} \] - Now combine: \[ -1 > 5 + \frac{6x - x}{3} \] \[ -1 > 5 + \frac{5x}{3} \] 3. Subtract \( 5 \) from both sides: \[ -6 > \frac{5x}{3} \] 4. Multiply both sides by \( 3 \): \[ -18 > 5x \] 5. Divide by \( 5 \): \[ -\frac{18}{5} > x \] or \[ x < -\frac{18}{5} \] ### Step 3: Combine the results From the two inequalities, we have: 1. \( x < 1 \) 2. \( x < -\frac{18}{5} \) (which is approximately \( -3.6 \)) Since \( -\frac{18}{5} \) is less than \( 1 \), the more restrictive condition is \( x < -\frac{18}{5} \). ### Conclusion The possible values of \( x \) must be less than \( -\frac{18}{5} \). Among the options given: - (a) -3 - (b) -4 - (c) 2 - (d) 3 The only option that satisfies \( x < -3.6 \) is: **(b) -4**
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