*8th grade math* 1.6(1 + 0.5n) – 3, 2 = 1.1(n – 6.8) please answer with work

Question

*8th grade math*
1.6(1 + 0.5n) – 3, 2 = 1.1(n – 6.8)
please answer with work

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2 months 2021-09-01T08:01:34+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-01T08:02:45+00:00

    Answer:

    67

    Step-by-step explanation:

    0
    2021-09-01T08:03:30+00:00

                            __

    Answer:   5.4945…

    Step-by-step explanation:

    1.6 (1 + 0.5n) − 3
    , 2 = 1.1 (n − 6.8)

    Rewrite the equation as 1.1 (n − 6.8) = 2.

    1.1 (n − 6.8) = 2  

    Divide each term by 1.1 and simplify.

      Divide each term in 1.1 (n − 6.8) = 2 by 1.1.

          1.1 (n − 6.8)/1.1  = 2/1.1

       Cancel the common factor of 1.1.

          n − 6.8 =  2/1.1

       Divide 2 by 1.1.                          

          n − 6.8 = 1.81…

    Move all terms not containing n to the right side of the equation.

       Add 6.8 to both sides of the equation.                  

          n = 1.81… + 6.8            

       Add 1.81… and 6.8.

          n = 8.618…

    Replace the variable n with 8.618… in the expression.

    1.6 (1 + 0.5 (8.618…)) − 3  

    Simplify each term.  

      Multiply 0.5 by 8.618…

          1.6 (1 + 4.309…) − 3

      Add 1 and 4.309…

          1.6 ⋅ 5.309… − 3

       Multiply 1.6 by 5.309…

          8.4945… − 3

      Subtract 3 from 8.4945…

          5.4945…

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