Simplify using the identity −2 /7 x 1/5 + 1/3 – 4/5 x – 2/7​

Question

Simplify using the identity −2 /7 x 1/5 + 1/3 – 4/5 x – 2/7​

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Ladonna 5 years 2021-08-15T21:10:04+00:00 1 Answers 21 views 0

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  1. kimchi2
    0
    2021-08-15T21:11:54+00:00
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    Answer:

    1/3 + 6/35

    Step-by-step explanation:

    We are given;

    −2/7 × 1/5 + 1/3 – 4/5 × -2/7

    Using the rule of bodmas, we will group them and solve with multiplication being the first operation.

    1/3 – (4/5 × -2/7) + (−2/7 × 1/5)

    Factorization of first and second bracket gives;

    1/3 + 2/7(4/5) + 2/7(-1/5)

    Factorizing again gives;

    1/3 + 2/7(4/5 – 1/5)

    >> 1/3 + 2/7(3/5)

    >> 1/3 + 6/35

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