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Write an equation representing all numbers that are 3 units from 7

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  1. 17 April, 23:51
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    Solution : |x+3| = 7

    or x = - 10 or x=4

    Explanation:

    •You are basically looking for 2 values of X

    •First X will be to the left of - 3

    •Second X will be to the right of - 3

    •Both X's will be 7 units away from - 3, if you do this correctly you will find that x to the left is equal to - 10 and x to the right is equal to 4

    You can develop the absolute value equation as follows:

    X=-3 - 7

    Or

    X=-3+7

    Add 3 to both sides of the equation to get:

    X+3=7

    X+3=-7

    This fits the basic definition of an absolute value equation that states if |x|=y, then x=y or x=-y
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