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2x + 3y = 9 3x - y = 8

Dan Dascalescu asked Apr 27, 2022

110,566 views

2 votes

2x + 3y = 9
3x - y = 8

Mathematics
high-school

Dan Dascalescu asked Apr 27, 2022

by Dan Dascalescu

3.3k points

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1 Answer

16 votes

$\left \{ {{2x + 3y = 9} \atop {3x - y = 8}} \right. <=>\left \{ {{2x + 3y = 9} \atop {9x-3x=24}} \right. <=>\left \{ {{2x+9x+3x-3x=9+24} \atop {9x-3x=24}} \right. \\<=>\left \{ {{11x=33} \atop {9x-3x=24}} \right. <=>\left \{ {{x=3} \atop {y=1}} \right.$