5003 Elementary Education Mathematics Subtest Exams — 5037 Praxis Math Answers
1. (2x + 3y - 7) - (2x - 3y - 8) Which of the following is equivalent to the preceding expression?
Answer: C
6y + 1
The expression simplifies to 6y + 1, making it the correct equivalent of the original expression provided.
A) 1
This option is incorrect because simplifying the expression results in a term involving 'y' and a constant, rather than just the constant 1.
B) -15
This option is also incorrect as the simplification process does not yield -15. The expression contains variables and does not equate to a negative constant.
C) 6y + 1
This is the correct answer. By simplifying the original expression (2x + 3y - 7) - (2x - 3y - 8), we combine like terms, resulting in 6y + 1.
D) 6y - 15
This option is incorrect because, while it contains the variable 'y', the constant term is incorrect. The simplification leads to a positive constant of 1, not a negative 15.
Conclusion
The correct answer, 6y + 1, accurately reflects the outcome of simplifying the original expression. All other options fail to represent the correct combination of terms derived from the expression, highlighting the importance of careful algebraic simplification.