jareka11 jareka11

22-08-2017
Mathematics

contestada

the product of 7 and a nimber increased by 3 is equal to twice the number subtracted from 39

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anju2710 anju2710

28-08-2017

Let the number is = x

So number increased by 3 is = x+3.

So product of 7 and (x+3) is = 7*(x+3).

Twice of number is = 2x

So we can write

7(x+3) = 39 - 2x

7x + 21 = 39 - 2x

Now we can arrange the term as

7x + 2x = 39 - 21

9x = 18

x = 2.

SO the number is 2.

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