Question

An unknown number is added to 4.The results is multipled by 3 to give an answer of 9

Answer 1

Answer:

see below

Step-by-step explanation:

Let us assume the unknown number be 'x'..

An unknown number is added to 4 = x + 4

To find the unknown number (x), let's form an equation.

According to the problem the required equation is (x + 4) 3 = 9

Solving for x

• 3x + 12 = 9

Now, we subtract 12 from both sides of the equation,

• 3x = - 3

Now, we Divide both sides by 3,

• x = -1

so, the unknown number (x) is -1.

Answer 2

Answer:

The unknown number is -1

Step-by-step explanation:

Let x be the unknown number.
x+4
The result is multiplied by 3, so 3(x+4).
Expand that to get 3x+12 and equate it to 9.
3x+12=9
3x = 9-12
3x=-3
x=-3/3
x=-1