13x-5 < 15x+4 < 7x+12, XR
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Answer:
Given : 13x−5<15x+4<7x+12
⇒ 15x+4>13x−5 and 15x+4<7x+12
⇒ 15x−13x>−5−4⇒15x−7x<12−4
⇒ 2x>−9⇒8x<8
⇒ x>
2
−9
⇒x<1
Solution : {x:
2
−9
<x<1,x∈R}
Step-by-step explanation:
hope it helps you
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