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? asked in Science & MathematicsMathematics · 5 years ago

Help with brackets question?

The question was to multiply out 3(2a+1). I got 5a+3, but the teacher has marked it as wrong. How do you do it, then?

3 Answers

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  • MICHAEL K
    Lv 7
    5 years ago

    3 times 2 is 6, not 5.

    3(2a + 1) =

    6a + 3.

  • vaibhav
    5 years ago

    3(2a+1) = 3*2a +3*1 =6a + 3

  • Anonymous
    5 years ago

    It's 6a+3 because you were supposed to multiply 3and2.. You added them which was wrong

    Good luck:)

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