Instructions: Solve the following linear equation 4(n + 5) – 2(5 + 7n) = -70 n =

Question

Instructions: Solve the following linear
equation
4(n + 5) – 2(5 + 7n) = -70
n =

in progress 0
Yến Oanh 5 months 2021-08-09T07:24:43+00:00 2 Answers 3 views 0

Answers ( )

    0
    2021-08-09T07:25:55+00:00

    Step-by-step explanation:

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    0
    2021-08-09T07:25:56+00:00

    Answer:

    Step-by-step explanation:

    4*(n +5) – 2*(5 + 7n) = -70

    4*n + 4*5 + 5*(-2) + 7n*(-2) = -70

    4n + 20 – 10 – 14n = -70

    4n – 14n + 20 – 10 = -70

    – 10n + 10 = -70

    Subtract 10 from both sides

    -10n = -70 – 10

    -10n = -80

    Divide both sides by (-10)

    n = -80/-10

    n = 8

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