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NCERT Exemplar Solutions Class 7 Mathematics Solutions for Simple Equations - Exercise in Chapter 4 - Simple Equations

Question 51 Simple Equations - Exercise

9/5 is the solution of the equation 4x – 1 = 8.

Answer:

False.

Consider the eqaution, 4x – 1 = 8

Transpose -1 to RHS then it becomes 1.

4x = 8 + 1

4x = 9

x = 9/4

Video transcript
"hello students i am rita your mass leader tutor and the today's question is anupama takes 125 minutes in walking a distance of 100 meter what distance would she cover in 315 minutes so in this question we make a table between distance and distance which is in meter and minutes and time which is in minutes so first of all she covered 100 meter in 125 minutes and three we have to find in 315 mil minutes how much distance we cover so if time is smooth then distance is more if time is less than distance is less so it is a case of direct variation it is a case of direct variation and in direct variation x k is equal to x by y so therefore 100 by 125 is equal to x by 315 25 425 fives so 4 by 5 into 315 is equal to x now we cancel out this five ones or five sigma thirty five these are fifty now four threes are twelve four six twenty four plus one two fifty two it means the value of x is 252 meter so she covered 252 meter in 350 minutes this is our answer i hope you like this video so please subscribe leader for more updates and do comment your questions thank you "
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