what is the value of a in the equation 3a + b = 54, when b = 9? 15 18 21 27
what is the value of a in the equation 3a + b = 54, when b = 9? 15 18 21 27
Answer
Explanation:
Step1: Substitute (b = 9) into the equation
Substitute (b = 9) into (3a + b=54), we get (3a+9 = 54).
Step2: Solve for (a)
First, subtract (9) from both sides of the equation: (3a+9 - 9=54 - 9), which simplifies to (3a = 45). Then divide both sides by (3): (a=\frac{45}{3}).
Answer:
A. 15