Select all of the equations below that are equivalent to:18−c=15Use properties of equality.Multi-select Choices:(A) 18−c−10=6(B) 18−c−12=3(C) 18−c−2=13(D) 18−c−12=5
Q. Select all of the equations below that are equivalent to:18−c=15Use properties of equality.Multi-select Choices:(A) 18−c−10=6(B) 18−c−12=3(C) 18−c−2=13(D) 18−c−12=5
Original Equation: We start with the original equation: 18−c=15. To find equivalent equations, we can add or subtract the same value from both sides of the equation. Let's check each option by applying the properties of equality.
Option (A) Analysis: For option (A), we subtract 10 from both sides of the original equation: (18−c)−10=15−10. Calculating the right side, we get 15−10=5. So, the equation becomes 18−c−10=5, which is not the same as option (A), which states 18−c−10=6.
Option (B) Analysis: For option (B), we subtract 12 from both sides of the original equation: (18−c)−12=15−12. Calculating the right side, we get 15−12=3. So, the equation becomes 18−c−12=3, which matches option (B).
Option (C) Analysis: For option (C), we subtract 2 from both sides of the original equation: (18−c)−2=15−2. Calculating the right side, we get 15−2=13. So, the equation becomes 18−c−2=13, which matches option (C).
Option (D) Analysis: For option (D), we subtract 12 from both sides of the original equation: (18−c)−12=15−12. Calculating the right side, we get 15−12=3. So, the equation becomes 18−c−12=3, which is not the same as option (D), which states 18−c−12=5.