bianca1286 bianca1286

18-02-2020
Mathematics

contestada

Decide which variable to isolate. Then substitute for this variable, and solve the system. y = x - 5, x + y = 9

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igoroleshko156 igoroleshko156

18-02-2020

Answer:

x = 7

y = 2

Step-by-step explanation:

x + y = 9 but y = x - 5

x + (x - 5) = 9

2x - 5 + 5 = 9 + 5

2x/2 = 14/2

x = 7

y = x - 5

y = (7) - 5

y = 2

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