Kjcampbell2
27.09.2020 •
Mathematics
Where to Dig: The dinosaur's neck bones are at another point on the grid — the solution to the system of equations below. Find the fossil! x + y = 5 –3x + 2y = 5
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Ответ:
(1,4)
Step-by-step explanation:
Solve top equation for x:
x = 5 – y
Sub into bottom equation:
–3(5 – y) + 2y = 5
–15 + 3y + 2y = 5
5y = 20
y = 4
Backsolve in top equation:
x + 4 = 5
x = 1
(x, y) = (1, 4)
Ответ:
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Step-by-step explanation:
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