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Maths-

General

Easy

Question

If 5x - 7 = 13 , what is the value of 10x - 14 ?

4
8
26
65

The correct answer is: 26

HINT :- multiplying the given equation by 2 gives the required result
given,
$5 straight x space minus space 7 space equals space 13 10 straight x space minus space 14 space equals space 2 left parenthesis 5 straight x space minus space 7 right parenthesis space equals space 2 left parenthesis 13 right parenthesis space equals space 26 therefore 10 straight x space minus space 14 space equals space 26$

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