whats 3(x + 2) = 21? show work please !!​

Question

whats 3(x + 2) = 21?
show work please !!​

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Thiên Di 4 years 2021-08-22T06:56:13+00:00 2 Answers 3 views 0

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  1. linhdan
    0
    2021-08-22T06:57:18+00:00
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    Answer:

    x=5

    Step-by-step explanation:

    3(x+2)=21

    3x+6=21

    3x+6-6=21-6\\\\3x=15\\\\\frac{3x}{3} = \frac{15}{3} \\\\x=5

  2. Gerda
    0
    2021-08-22T06:57:43+00:00
    Reply

    Answer:

    x = 5

    Step-by-step explanation:

    You first have to multiply 3 by x and 2, and you would get 3x and 6. 3(x + 2)=3x +6

    Then you have to move the 6 to the other side and it will become negative. 3x= -6 +21

    Then you subtract 21-6 to get 15. 3x = 15

    Then you are left with 3x = 15.

    Divide 3 from both sides and you get x =5.

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