Question

What is the value of x in the equation 3x – 1/9y = 18, when y = 27?

Answer 1

${ \red{ \underline{ \underline{ \huge{ \mathfrak{answer}}}}}}$

${ \red{3x - 1 \9 \: (27) = 18}}$

3x- 27/9 = 18

3x - 3 = 18

adding 3 to both sides

3x - 3+3 = 18 + 3

3x = 21

divide both sides by 3

3x/3 = 21/3

X = 7

${ \red{x = 7}}$