Multiplication is a way of adding the same number multiple times. When you multiply 3×3, you're adding the number 3 three times:
3×3=3+3+3=9
So, 3×3=9 means that you're taking three groups of three, which equals 9 in total.
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Math Question: Solve the inequality: 3x + 7 < 14, where x is a real number. Express your solution using interval notation.