use the order of operations -5 + 3(7.2 – 3.2)

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use the order of operations -5 + 3(7.2 – 3.2)

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Thiên Di 7 months 2021-07-29T09:40:41+00:00 2 Answers 3 views 0

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    0
    2021-07-29T09:41:52+00:00

    Answer:

    -5 + 3(7.2 – 3.2) equals 7.

    Step-by-step explanation:

    The order of operations states the order in which different mathematical operations should be done first, you can use the mnemonic PEMDAS to remember the order to complete each operation. PEMDAS states that the order must be followed as Parenthesis, Exponents, Multiplication/Division, and Addition/Subtraction. In the expression -5 + 3(7.2 – 3.2), the three mathematical operations being used are subtraction, multiplication, and parenthesis, so based on PEMDAS, the order to complete them is parenthesis, multiplication, and subtraction. -5 + 3(7.2 – 3.2) = -5 + 3(4) = -5 + 12 = 7, so that is your final answer.

    0
    2021-07-29T09:42:07+00:00

    \displaystyle\bf -5+3(7.2-3.2)=7\\\\1)\:7.2-3.2=4\\\\2)\:4\cdot3=12\\\\3)\:12-5=7

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