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algebra

posted by on .

how do i figure this out step by step?
3x-7=5x+13

  • algebra - ,

    Start out by writing out the equation again.

    3x-7=5x+13

    Bring all variables and constants to either sides of the equation.

    3x-7=5x+13
    -2x=20

    Finally, solve for x.

    -2x=20
    x=-10

  • algebra - ,

    The goal of the problem is to get the x by itself and figure out what x is. The first thing you should do is work with the whole numbers 7 and 13.
    3x-7=5x+13
    add 7 to both sides. By adding 7 to both sides you are not changing the equation but equaling it out. the new equation should be
    3x=5x+20
    Now subtract 5x from each side
    your new equation should be
    -2x=20
    divide each side by -2
    -2x/-2=20/-2
    x= -10

  • algebra - ,

    Thanks Emily Teacher!

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