Question

I think of a number,multiply it by three, and add four.i get twenty two

Answer 1

The equation that could be formed using the letter x to be represent the unknown number is 3x + 4 = 22

let

x = the unknown number

multiply it by three

= x × 3

= 3x

add four

3x + 4

I get twenty two

3x + 4 = 22

solve for x

3x = 22 - 4

3x = 18

x = 18/3

x = 6

Therefore, the unknown number in the equation 3x + 4 = 22 is 6

check:

3x + 4 = 22

3(6) + 4 = 22

18 + 4 = 22

Answer 2

x = 6

Explanation:

Let x be the number

Write it out: 3x + 4 = 22

Subtract 4 from each side, so it now looks like this: 3x = 18

Divide each side by 3 to cancel out the 3 next to x. It should now look like this: x = 6