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Mathematics, 21.11.2020 06:40 masie03
Kendra was given this system of equations.
Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y = 5.
Kendra’s work is shown in the table. Where, if anywhere, did Kendra first make a mistake?
Steps
Kendra’s Work
Step 1
Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y = 5. Negative 5 x = negative 10.
Step 2
Negative 5 x = negative 10. x = 2.
Step 3
Negative 3 (2) + 7 y = negative 15. Negative 6 + 7 y = negative 15. 7 y = negative 9. y = Negative StartFraction 9 Over 7 EndFraction = negative 1 and StartFraction 2 Over 7 EndFraction
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Kendra was given this system of equations.
Negative 3 x + 7 y = negative 15. Negative 2 x minus 7 y...
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