anonymous
  • anonymous
show steps please Solve the system by using elimination or elimination with multiplication. x - y = 3 and x + y = 7 Solve the system by using elimination or elimination with multiplication. 2x + 3y = 12 and 3x + 2y = 13
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
x-y=3 x+y=7 Add them(elimination) 2x=10 x=5 x-y=3 y=2 (5,2)
anonymous
  • anonymous
first u need to find the value of either x or y example: x - y = 3 and x + y = 7 x - y=3 x =3+y or y = x-3
anonymous
  • anonymous
is (5,2) he anwser for the first one?

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More answers

anonymous
  • anonymous
yep!
anonymous
  • anonymous
try to do the second one urself
anonymous
  • anonymous
2x+3y=12 3x+2y=13 multiply the first one by -2. multiply the second one by 3. -4x-6y=-24 9x+6y=39 5x=15 x=3 Use this hint above if you need it :)
anonymous
  • anonymous
3, 2?
anonymous
  • anonymous
good!
anonymous
  • anonymous
Solve the system by using elimination or elimination with multiplication. x + y = 16 and x + y = -2 is this one no solution?
anonymous
  • anonymous
yeah
anonymous
  • anonymous
3x - 2y = 9 and -3x + 2y = -9 and is this on no solution or infinte solutions??
anonymous
  • anonymous
notice if you eliminate it, there's nothing left
anonymous
  • anonymous
k thanks so much. thats what i thought. ya just making sure.
anonymous
  • anonymous
the last one you asked is infinite
anonymous
  • anonymous
they're the same thing
anonymous
  • anonymous
ok good thats what i thought! not on hw they arent lol
anonymous
  • anonymous
haha true :P
anonymous
  • anonymous
\[6\sqrt{2}-3\sqrt{2}\]
anonymous
  • anonymous
3 sqrt 2
anonymous
  • anonymous
haha i already got it :p this one is hard. one sec.
anonymous
  • anonymous
\[5\sqrt{3}+8\sqrt{3}-6\sqrt{2}+4\sqrt{2}\]
anonymous
  • anonymous
13 sqrt3 -2 sqrt 2
anonymous
  • anonymous
lol, is this school hw?
anonymous
  • anonymous
ya
anonymous
  • anonymous
how did you get that?
anonymous
  • anonymous
\[\sqrt{2 } =x \] \[\sqrt{3} = y\] 5y+8y -6x+4x= 13y -2x and u will get : \[13\sqrt{3}-2\sqrt{2}\]
anonymous
  • anonymous
that is the easier way to understand it

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