225 : x = 15 / 2 x + 17 = 33 / 6 + 10 x = 6 mũ 5 : 6 mũ 3

Question

225 : x = 15 / 2 x + 17 = 33 / 6 + 10 x = 6 mũ 5 : 6 mũ 3

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Huy Gia 1 year 2020-10-14T04:31:59+00:00 2 Answers 90 views 0

Answers ( )

    0
    2020-10-14T04:33:22+00:00

    $a)225:x=15$

    $ ⇔x=225:15$

    $⇔x=15$

    $\text{Vậy $x=15$}$

    $b)2x+17=33$

    $⇔2x=33-17$

    $⇔2x=16$

    $⇔x=8$

    $\text{Vậy $x=8$}$

    $c)6+10x=6^5:6^3$

    $⇔6+10x=6^{5-3}$

    $⇔6+10x=6^2$

    $⇔6+10x=36$

    $⇔10x=36-6$

    $⇔10x=30$

    $⇔x=3$

    $\text{Vậy $x=3$}$

     

    0
    2020-10-14T04:33:27+00:00

    Đáp án:

     ở dưới

    Giải thích các bước giải:

     $a)⇔x=225:15$

    $⇔x=15$

    $b)⇔2x=16$

    $⇔x=16:2$

    $⇔x=8$

    $c)⇔6+10x=6^2$

    $⇔10x=36-6$

    $⇔x=30:10$

    $⇔x=3$

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