SAT Math Multiple Choice Question 646: Answer and Explanation

Home > SAT Test > SAT Math Multiple Choice Practice Tests

Test Information

Question: 646

1. If 2x - 3y = 9 and y = 3, then what is the value of x?

  • A. 0
  • B. 3
  • C. 6
  • D. 9

Correct Answer: D

Explanation:

D

Algebra (solving equations) EASY

Original equation:

2x - 3y 5 = 9

Substitute y = 3:

2x - 3(3) = 9

Simplify:

2x - 9 = 9

Add 9:

2x = 18

Divide by 2:

x = 9

Previous       Next