Question x-2-4-
1.4 Systems of Two Linear Equations - Elimination method
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The solution to the given system of equations is . What is the value of ?
Enter your answer:
x - 2 - 4 y + 7 = 117 x - 2 + 4 y
Hard-difficulty · SAT Math · Systems of Two Linear Equations — Elimination method. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
The correct answer is . Adding the first equation to the second equation in the given system yields , or . Multiplying both sides of this equation by yields . Therefore, the value of is .
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