radomes.openskiesproject.org
ymskids ymskids
  • 13-01-2015
  • Mathematics
Answered

how do you do x=2y+3

2x-3y=4

Verified Answer :

luana
luana luana
  • 13-01-2015

\(\left \{ {{x=2y+3} \atop {2x-3y=4}} \right. \\\\2(2y+3)-3y=4\\4y+6-3y=4\\4y-3y=4-6\\y=-2\\\\x=2\cdot(-2)+3\\x=-4+3\\x=-1\\\\ \left \{ {{y=-2} \atop {x=-1}} \right.\)

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