Where should parentheses be added to make the following expression true? 8 + 2 * 3 + 4 = 22

(8 + 2) * 3 + 4 = 22

8 + 2 * (3 + 4) = 22

(8 + 2) * (3 + 4) = 22

Answer:
8 + 2 * (3 + 4) = 22

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