what is the value of x in the equation 3x - \\frac{1}{9}y = 18, when y = 27?\n5\n7\n45\n63

Explanation:

Step1: Substitute y value

Substitute (y = 27) into the equation (3x-\frac{1}{9}y=18), we get (3x-\frac{1}{9}\times27 = 18).

Step2: Simplify the equation

Calculate (\frac{1}{9}\times27 = 3), so the equation becomes (3x - 3=18).

Step3: Isolate the term with x

Add 3 to both sides of the equation: (3x-3 + 3=18 + 3), which simplifies to (3x=21).

Step4: Solve for x

Divide both sides of the equation by 3: (\frac{3x}{3}=\frac{21}{3}), so (x = 7).

Answer:

B. 7