x/3-y/4=3 x/2+y/3=13 整理得:4x-3y=36 ①3x+2y=78 ②①×2﹢②×3得8x+9x=72+23417x=306x=18①×3-②×4得:-9y-8y=108-312-17y=-204y=12∴x=18y=12
x等于18、y等于12
x=18,y=12