Consider the following proportion: 2 12 — -— 7 x Use cross products to write the equation: 2x = 84. W

Question

Consider the following proportion:
2 12
— -—
7 x
Use cross products to write the equation: 2x = 84.
What is the value of x?

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Bình An 6 months 2021-07-29T09:52:01+00:00 2 Answers 10 views 0

Answers ( )

    0
    2021-07-29T09:53:28+00:00

    2x = 84 so 2x /2 = 84/= x=42

    0
    2021-07-29T09:53:44+00:00

    \displaystyle\bf 2x=84\\\\x=84:2=42\\\\\boxed{x=42}

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )