Question

7 times a number decreased by 3 equals 18 find the number
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Answer 1

$\huge{\underline{\underline{\huge{\bold{AnsweR \: :-}}}}}$

Let, the number be x

x × 7 – 3 = 18

= 7x – 3 = 18

= 7x = 21

= x = 3

So, the number is 3.

Answer 2

Let's Solve

Let the number= x

7 times a number=(7×x)=7x

7x-3=18

7x=18+3

7x=21

x=21/7

x=3

Now check the answer..

(7×3)-3=18

21-3=18

18=18

LHS=RHS

Prooved✌️