Math

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how do you do this??

-4x-7=-2(x+3)

  • Math -

    -4x-7=-2(x+3)


    Multiply -2 by each term inside the parenthesis (x+3).

    -4x-7=(-2(x)-2(3))


    Complete the multiplication of -2 by each term inside the parenthesis.

    -4x-7=(-2x-6)


    Remove the parenthesis around the expression -2x-6.

    -4x-7=-2x-6


    Since -2x contains the variable to solve for, move it to the left-hand side of the equation by adding 2x to both sides.

    -4x-7+2x=-6


    Since -4x and 2x are like terms, subtract 2x from -4x to get -2x.

    -2x-7=-6


    Since -7 does not contain the variable to solve for, move it to the right-hand side of the equation by adding 7 to both sides.

    -2x=7-6


    Subtract 6 from 7 to get 1.

    -2x=1

    Divide each term in the equation by -2.

    Simplify the left-hand side of the equation by canceling the common terms.


    Simplify the right-hand side of the equation by simplifying each term.
    therefore x = -1/2

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