Reyanne
Reyanne
04-11-2016
Mathematics
contestada
How do you solve by substitution in algebra?
Respuesta :
Sorbji
Sorbji
04-11-2016
Ok so lets say we have a system of equations:
y = x + 1
x + y = 5
All you would do is plug in what is equal to the variable so:
x + x + 1 = 5
Then you would just simplify and solve
2x + 1 = 5
-1 -1
_________
2x = 4
-- --
2 2
x=2
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