I really need help and pls plsss show ur work so I can understand 1.2x + 7 – 5x 2.2c – 3 = 2(6 – c) + 7c

Question

I really need help and pls plsss show ur work so I can understand
1.2x + 7 – 5x
2.2c – 3 = 2(6 – c) + 7c

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Thu Giang 6 months 2021-08-21T22:48:58+00:00 2 Answers 1 views 0

Answers ( )

    0
    2021-08-21T22:50:05+00:00

    Answer:

    2. 3/2 = 1.5. 3. 7. 5. 7/5 = 1.4. 4. 17. 12. 17/12 = 1.416666. 5. 41. 29. 41/29 = 1.413793. 1.3(c) 1.7(c).  let P2k = Xk and q2k = 2Yk.

    Step-by-step explanation:

    0
    2021-08-21T22:50:13+00:00

    Answer:

    -3.8x + 7 and c = -75/14 and/or c = -5.35714

    Step-by-step explanation:

    First equation:

    1.2x + 7 – 5x =

    Step 1 – Group like terms:

    1.2 – 5x + 7

    Step 2 – Add simliar elements:

    1.2 x – 5x = -3.8x =

    3.8x + 7

    Answer: -3.8x + 7

    Second equation:

    2.2c – 3 = 2(6 – c) + 7c =

    Step 1 – Multiply both sides by 10:

    2.2c ⋅ 10-3 ⋅ 10 = 2(6 – c) ⋅ 10 + 7c ⋅ 10

    Step 2 – Refine:

    22c – 30 = 20(6-c) + 70c =

    – Expand 20(6-c): 120 – 20c

    22c – 30 = 120 – 20c + 70c

    Step 3 – Add similar elements:

    -20c + 70c = 50c =

    22c – 30 = 120 + 50c

    Step 4 – Add 30 to both sides:

    22c – 30 + 30 = 120 + 50c + 30

    Step 5 – Simplify:

    22c = 50c + 150

    Step 6 – Subtract 50c from both sides:

    22c – 50c = 50c + 150 – 50c

    Step 7 – Simplify:

    -28c = 150

    Step 8 – Divide both sides by -28:

    -28c/-28 = 150/-28

    Step 9 – Simplify:

    c = -75/14

    Answer:

    Fraction form: c = -75/14

    Decimal form: c = -5.35714

    Hey! Your question wasn’t quite clear, so the most I could do was simplify both equations in a way you can hopefully understand. If these aren’t the answers you were looking for, please elaborate on what I was supposed to answer!

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