If and , what is the value of ?
Answer and explanation
Correct answer: B. 7
- 8 is the value of () rather than .
- -1 is the difference .
- 15 is the sum .
- -1 is the difference .
- 15 is the sum .
- Step 1: Add the two linear equations to eliminate : .
- Step 2: Divide both sides by to solve for : .
Answer
7.
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