Which of the following mathematical sentences is a linear equation in one variable? *
x + 7 = 11
x^4 − 81 = 0
x − b = 5
x^3 − 6x^2 + 5x − 12 = 21
x + 7 = 11
x^4 − 81 = 0
x − b = 5
x^3 − 6x^2 + 5x − 12 = 21
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Answer:
x^3 − 6x^2 + 5x − 12 = 21
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