Alexis solved this equation:−2(4p−11)+7p=−10p−14−8p+22+7p=−10p−14−p+22=−10p−149p+22=−149p=−36p=−4Which property is not needed to justify any of the steps?Choices:(A) division property of equality(B) identity property of addition(C) addition property of equality(D) distributive property
Q. Alexis solved this equation:−2(4p−11)+7p=−10p−14−8p+22+7p=−10p−14−p+22=−10p−149p+22=−149p=−36p=−4Which property is not needed to justify any of the steps?Choices:(A) division property of equality(B) identity property of addition(C) addition property of equality(D) distributive property
Review Equation Solution: Review the equation and the steps Alexis took to solve it.- Alexis first distributed −2 across (4p−11), then combined like terms, and finally isolated p to solve for it.
Properties Analysis: Analyze the properties used in each step.- Distributive property: Used to expand −2(4p−11) to −8p+22.- Addition property of equality: Used to add 10p to both sides to isolate the p terms.- Division property of equality: Used to divide both sides by 9 to solve for p.
Property Check: Check each property against the choices given.- (A) Division property of equality: Used in the final step to solve for p.- (B) Identity property of addition: Not explicitly used in any step.- (C) Addition property of equality: Used to add 10p to both sides.- (D) Distributive property: Used in the first step to expand the equation.