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14 December, 12:28

Simplify and solve this equation 4m + 9 + 5m - 12=42

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  1. 14 December, 15:01
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    m = 5

    Explaination:

    Given equation is:

    4m + 9 + 5m - 12=42

    We need to solve this, We see that given equation is linear equation

    So, we simplify the left hand side

    4m + 9 + 5m - 12=42

    Combine like terms

    here 4m & 5m are like terms

    4m + 5m + 9-12 = 42

    9m + 9 - 12 = 42

    9m + - 3 = 42

    Now move - 3 to right side

    9m = 42 + 3

    9m = 45

    m = 5
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