An expression is evaluated as shown below. 8 + 3 × (4 ÷ 2) − 7 Step 1: 8 + 3 × 2 − 7 <

Question

An expression is evaluated as shown below.

8 + 3 × (4 ÷ 2) − 7

Step 1: 8 + 3 × 2 − 7

Step 2: 11 × 2 − 7

Step 3: 22 − 7

Step 4: 15

In which step does a mistake first appear?

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Hồng Cúc 3 years 2021-08-30T22:58:51+00:00 1 Answers 6 views 0

Answers ( )

  1. danthu
    0
    2021-08-30T22:59:55+00:00
    Reply

    Answer:

    Step 2: 11 × 2 – 7

    Step-by-step explanation:

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