thenaivecube
thenaivecube thenaivecube
  • 03-06-2018
  • Mathematics
contestada

Solve: 2x-3y=21 and -6x+2y=7 PLEASE HELP

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musicnotesloves
musicnotesloves musicnotesloves
  • 03-06-2018
the first one is : x=3/2y+21/2
the second one is: x=1/3y+−7/6
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vidalmari6p99qfk
vidalmari6p99qfk vidalmari6p99qfk
  • 03-06-2018

y= 10  

2x-3y=21

2x=21+3y

x= (21/2 +3/2 y)


-6(21/2+3/2y)+2y=7

126/2+18/2y+2y=7


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