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Questions and Answers
What is the result of $8 imes (4 + 3)$?
What is the result of $8 imes (4 + 3)$?
- 35
- 56 (correct)
- 28
- 64
Solve for $x$ in the equation $3x - 7 = 8$.
Solve for $x$ in the equation $3x - 7 = 8$.
- $x = 15$
- $x = -1$
- $x = 5$ (correct)
- $x = -5$
What is the value of $5^3$?
What is the value of $5^3$?
- 25
- 125 (correct)
- 625
- 15
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Study Notes
Algebraic Operations
- $8 × (4 + 3) = 8 × 7 = 56$ (follows the order of operations)
- $(4 + 3) = 7$ (evaluate the expression inside the parentheses first)
Linear Equations
- $3x - 7 = 8$ (simple linear equation)
- Add 7 to both sides: $3x = 15$ (isolate the variable)
- Divide by 3: $x = 15/3 = 5$ (solve for x)
Exponents
- $5^3 = 5 × 5 × 5 = 125$ (evaluating exponentiation)
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