Question

. Twice a number when
decreased by 7 gives 45. Find the
number.
​

Answer 1

Answer:

The number is 26

Step-by-step explanation:

Let the number be x.

twice =2x

When it is decreased by 7 we get the following equation:

2x−7=45

⇒2x=45+7

⇒2x=52

⇒x= 2/52

∴x=26

The number is 26.

Answer 2

Answer:

given equation, Twice a number when  decreased by 7 gives 45.

let the unknow n value be x

then the twice a number means '2x'

decreased by 7 then equation is 2x-7

and the full equation is 2x-7=45

                                           2x  = 45+7

                                            x    = 52/2

                                             x  = 26

the number is 26.

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