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math-algebra

posted by on .

how do i solve this using the substitution method

3x+2y=7
2x-3y=-4

x=7-2y/3

2(7-2y/3)-3y=-4

this is where i get stuck
help would be much apprieciated

  • math-algebra - ,

    3x+2y=7
    3x=-2y+7
    x=-2/3y+7/3
    2(-2/3y+7/3)-3y=-4
    -4/3y+14/3-3y=-4
    Combine like terms, solve for y, replace y in either original equation to solve for x. Post your work to get it checked.

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