Email
Chat with tutor
logo

Ask Questions, Get Answers

X
 
Questions  >>  CBSE XI  >>  Math  >>  Linear Inequalities
Answer
Comment
Share
Q)

Solve the inequality for real $x: 2(2x+3) -10 < 6(x-2)$

$\begin{array}{1 1} (A)\;(4,\infty)\\(B)\;(\infty,-6)\\(C)\;(-4,\infty)\\(D)\; (-9,\infty)\end{array} $

1 Answer

Comment
A)
Toolbox:
  • Same Quantity can be added (a subtracted ) to (from ) both sides of the inequality with out changing the sign of the in equality.
  • Same positive quantities can be multiplied or divided to both side of the in equality with out changing the sign of the inequality.
  • If same negative quantity is multiplied or divided to both sides of the inequality is reversed i.e $ '>'$ sign changes to $'<' $ and $'<'$ changes $'>'$ .
The given inequlaity is $2(2x+3) -10 < 6 (x-2)$
$=> 4x+6 -10 < 6 (x-2)$
$=> 4x-4 < 6x -12$
Adding 12 on both sides,
$=> 4x-4+12 < 6x-12+12$
Adding $-4x$ on both sides,
=> $4x+8-4x < 6x -4x $
=> $ 8 < 2x$
dividing by a positive number 2 on both sides, => $4 < x$
Step 2:
All numbers greater than $4$ satisfy the given inequality
The solution set is $(4 , \infty)$
Hence A is the correct answer.
Help Clay6 to be free
Clay6 needs your help to survive. We have roughly 7 lakh students visiting us monthly. We want to keep our services free and improve with prompt help and advanced solutions by adding more teachers and infrastructure.

A small donation from you will help us reach that goal faster. Talk to your parents, teachers and school and spread the word about clay6. You can pay online or send a cheque.

Thanks for your support.
Continue
Please choose your payment mode to continue
Home Ask Homework Questions
Your payment for is successful.
Continue
Clay6 tutors use Telegram* chat app to help students with their questions and doubts.
Do you have the Telegram chat app installed?
Already installed Install now
*Telegram is a chat app like WhatsApp / Facebook Messenger / Skype.
...