Evaluate the expression when m=25 M+2(m-5)

Question

Evaluate the expression when m=25
M+2(m-5)

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Thu Thủy 3 years 2021-08-08T12:52:53+00:00 1 Answers 9 views 0

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  1. MichaelMet
    0
    2021-08-08T12:54:48+00:00
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    m = 25

    25 + 2(25-5) = 65

    1. parentheses first (25-5) = 20
    2. multiplication 2•20 = 40
    3. addition 25 + 40 = 65

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