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2 March, 01:23

How would you work out the linear equation (7x-5) - (x-4) + (3x-8) = 3x-5?

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  1. 2 March, 03:05
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    First take the brackets away so:

    7x-5 - x+4+3x-8 = 3x-5

    do the additions and subtractions:

    9x-9 = 3x-5

    isolate x to one side (remember they switch signs when they switch sides):

    9x-3x = - 5+9

    add and subtract

    6x = 4

    solve for x:

    x = 4/6
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