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1 August, 01:38

What is 5m+6+m-18=60

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  1. 1 August, 01:42
    0
    5m+6+m-18=60That's a linear equation in 'm '. There's only one number that 'm' can be

    that makes the equation true. The assignment is usually to find out what

    that number is.

    Before we get carried away and confuse ourselves, let's do some work

    on the left side, and try to make it simpler.

    Do you see that ' 5m ' and that ' + m '? We can combine them, and write ' 6m '.

    Do you see that ' + 6 ' and that ' - 18 '? We can combine those, and write ' - 12 '.

    Now the equation is much simpler:

    6m - 12 = 60

    Add 12 to each side:

    6m = 72

    Divide each side by 6:

    m = 12
  2. 1 August, 01:46
    0
    5m + 6m - 18 = 60 combine like terms

    11m - 18 = 60 subtract from both sides

    -18 - 18

    11m = 78 divide 11

    m = 7. 0909 ...

    round to ... = 7.1
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