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Vikentia [17]
3 years ago
12

I'm doing system of equations and I have to solve using substitution

Mathematics
2 answers:
guapka [62]3 years ago
5 0
Plug in 5x for y
x(5x) = 45
5x^2 = 45
Divide by 5
x^2 = 9
X = 3
mel-nik [20]3 years ago
4 0

Answer: +3, -3

Step-by-step explanation:

ok so all you need to do is plug in that first equation into the second one.

x(5x) = 45

5x^2 = 45

x^2 = 9

x     = +3, -3

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