Mathematics

Mathematics, 13.08.2020 03:01, vvkaitlynvv4982

Help please! <3 Simplify the expression to find the correct answer. Show your work and explain how you got that answer. $\frac{1}{3}\sqrt{21}-\frac{2}{3}\sqrt{3} x \sqrt{7}$ A. $-\frac{1}{3}\sqrt{21}$ B. $\frac{2}{3}\sqrt{21}$ C. $\frac{2}{3}\sqrt{18×7}$ D. $-\frac{1}{3}\sqrt{63}x\sqrt{7}$

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