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4 March, 19:01

3x+2-5x=10 what is X

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  1. 4 March, 20:16
    0
    x = - 4

    Step-by-step explanation:

    Solve for x:

    3 x - 5 x + 2 = 10

    Grouping like terms, 3 x - 5 x + 2 = 2 + (3 x - 5 x):

    2 + (3 x - 5 x) = 10

    3 x - 5 x = - 2 x:

    -2 x + 2 = 10

    Subtract 2 from both sides:

    (2 - 2) - 2 x = 10 - 2

    2 - 2 = 0:

    -2 x = 10 - 2

    10 - 2 = 8:

    -2 x = 8

    Divide both sides of - 2 x = 8 by - 2:

    (-2 x) / (-2) = 8 / (-2)

    (-2) / (-2) = 1:

    x = 8 / (-2)

    The gcd of 8 and - 2 is 2, so 8 / (-2) = (2*4) / (2 (-1)) = 2/2*4 / (-1) = 4 / (-1):

    x = 4 / (-1)

    Multiply numerator and denominator of 4 / (-1) by - 1:

    Answer: x = - 4
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