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Tema [17]
3 years ago
10

How do I use substitution to solve a system of linear equations?

Mathematics
1 answer:
ELEN [110]3 years ago
7 0

Answer:

for example:

y=2x+4

 3x+y=9

We can substitute y in the second equation with the first equation since y = 2x+4.

  3x+(2x+4)=9

5x+4=9

5x=5

x=1

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