Solve the equation, 3x – 6 = 12, for x. Which of the following properties did you apply? Question 18 options: A) Distributive pr
operty, subtraction property of equality, and multiplication property of equality B) Addition property of equality and division property of equality C) Distributive property, addition property of equality, and division property of equality D) Addition property of equality and multiplication property of equality
Use elimination Multiply first equation by 4 12a - 8b = 56 12a + 9b = 39 Subtract both -17b = 17 b = -1 Plug in -1 for b 3a - 2(-1) = 14 3a = 12, a = 4 Final answer: a = 4, b = -1
