Question

10 added ti 5 times a number is equal to 4 added to 7 times the number. what is the number​

Answer 1

Answer:

The number is 3

Step-by-step explanation:

let the number be "x"

so according to question, 10 added ti 5 times a number is equal to 4 added to 7 times the number

5 times the number is 5*x = 5x and 7 times the number is 7*x = 7x

=> 10 + 5x = 4 + 7x

=> 10 - 4 = 7x - 5x

=> 2x = 6

=> x = 6/2 = 3

Hence the number is 3

                                           

                                                  VERIFICATION :

applying x = 3 in the equation 10 + 5x = 4 + 7x :

LHS = 10 + 5x = 10 + 5(3) = 10 + 15 = 25

RHS = 4 + 7x = 4 + 7(3) = 4 + 21 = 25

LHS = RHS

Hence verified that the required number is 3

Answer 2

5x + 10 = 7x + 4

10 - 4 = 7x - 5x

6 = 2x

6/2 = x

3 = x

Therefore , x = 3

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