Question

Twelve decreased by twice a number is -8. Find the number

Answer 1

Solution :-

Let the number be "x" , then according to the question :

• 2x - 12 = -8

Further solving

→ 2x = -8 + 12

→ 2x = 4 .

→ x = 2

Answer 2

★ Solution :

Let number be n.

`\rule{130}{1}`

☯
`\underline{\boldsymbol{According\: to \:the\: Question\:now :}}`

`:\implies\sf 2n - 12 = -8 \\\\\\:\implies\sf 2n = -8 + 12\\\\\\:\implies\sf 2n = 4\\\\\\:\implies\sf n = (4)/(2)\\\\\\:\implies\underline{\boxed{\sf n = 2}}\:\:\:\:\:\Bigg\lgroup\bf{Required\: number}\Bigg\rgroup`

`\therefore\:\underline{\textsf{The required number is \textbf{2}}}.`