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geniusboy [140]
2 years ago
10

On your own paper, solve the system of equations using elimination and identify the solution. Always list your answer alphabetic

ally in order pairs.
5e + 4f=9
4e+5f=9

A.(2,2)
B.(1,1)
C.(,1,-1(
D.(-2,-2)
E.IMS
F,NS
Mathematics
1 answer:
Oksana_A [137]2 years ago
4 0
5e + 4f = 9....multiply by -4
4e + 5f = 9 ...multiply by 5
------------------
-20e - 16f = -36 (result of multiplying by -4)
20e + 25f = 45 (result of multiplying by 5)
----------------add
9f = 9
f = 9/9
f = 1

5e + 4f = 9
5e + 4(1) = 9
5e + 4 = 9
5e = 9 - 4
5e = 5
e = 5/5
e = 1

solution is (1,1)


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