Solve .
Answer and explanation
Correct answer: A.
- Step 1: Subtract from both sides: .
- Step 2: Add to both sides: .
- Step 3: Divide by : .
Answer
.
Why not the others: : This subtracts from instead of adding it to both sides. : This adds to instead of subtracting it, giving . : This subtracts and together, giving .
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