-4x – 6x = -20 =? -3(2x – 3) = 33 = ? 4x + 3x + 2x = 180 = ?

Question

-4x – 6x = -20 =?

-3(2x – 3) = 33 = ?

4x + 3x + 2x = 180 = ?

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Mộc Miên 2 months 2021-07-24T16:44:30+00:00 1 Answers 1 views 0

Answers ( )

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    2021-07-24T16:45:43+00:00

    Answer:

    -4x-6x=-20=

    x=2

    -3(2x-3)=33=

    x=-4

    4x+3x+2x=180

    x=20

    Step-by-step explanation:

    -4x-6x=-20                                

    -4+(-6)=-10x

    -10x=20 (divide both by 10)

    x=-2 (divide by -1 to get positive)

    x=2

    -3(2x-3)=33

    -6x+9=33

         -9 .  -9

    -6x=24 (divide both by -6)

    x=-4 (divide by -1 to make positive)

    4x+3x+2x=180

    (combine like terms)

    9x=180 (divide both sides by 9)

    x=20

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