anonymous
  • anonymous
Solve the system of equations by substitution. What is the solution for x? 2x + y = 1 4x + 2y = -2 A) x = 0 B) x = 2 C) There is no x value as there is no solution. D) x can be any value as there is an infinite number of solutions.
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
anonymous
  • anonymous
I am sorry I forgot how to do system of equations by substitution unfortunately.
anonymous
  • anonymous
do you know anyone who is good at these and could help me out?

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More answers

anonymous
  • anonymous
anonymous
  • anonymous
These people may be able to help.
pooja195
  • pooja195
Whats the opposite of 2?
pooja195
  • pooja195
any ideas?
anonymous
  • anonymous
-2
pooja195
  • pooja195
good so we multiply -2(2x + y = 1) 4x + 2y = -2 \[\huge~\rm~-2(2x + y = 1) \]
pooja195
  • pooja195
Distribute
anonymous
  • anonymous
I have no idea
pooja195
  • pooja195
-2 x 2 = ?
anonymous
  • anonymous
-4
pooja195
  • pooja195
-2 x y = ?
anonymous
  • anonymous
I don't know
pooja195
  • pooja195
-2(2x + y = 1) 4x + 2y = -2 \[\huge~\rm~-2(2x + y = 1) \] \(\huge\color{red}{-4x-2y=-2}\)
pooja195
  • pooja195
−4x−2y=−2 4x+2y=−2 Heres the fun part :D -4+4=? -2+2=? -2+-2=?
anonymous
  • anonymous
can you do that for me... im still a little lost..
pooja195
  • pooja195
-4+4=?
anonymous
  • anonymous
0
pooja195
  • pooja195
-2+2=?
anonymous
  • anonymous
0
pooja195
  • pooja195
-2+-2?
anonymous
  • anonymous
-4
pooja195
  • pooja195
When we have a number = a DIFFERENT number we have no solution its not possible to solve 0=-4 would make it so that there is no solution
anonymous
  • anonymous
so C?
pooja195
  • pooja195
ye
anonymous
  • anonymous
See @pooja195 is amazing in Algebra. And I am great in geometry. GOOD WORK @pooja195
pooja195
  • pooja195
:) thanks :)
anonymous
  • anonymous
No Problem

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