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galina1969 [7]
2 years ago
13

Solve the simultaneous equations by substitution x-3y=-7 x=5-y

Mathematics
1 answer:
WINSTONCH [101]2 years ago
5 0

Answer:

x = 2, y = 3

Step-by-step explanation:

x - 3y = - 7 → (1)

x = 5 - y → (2)

Substitute x = 5 - y into (1)

5 - y - 3y = - 7

5 - 4y = - 7 ( subtract 5 from both sides )

- 4y = - 12 ( divide both sides by - 4 )

y = 3

Substitute y = 3 into (2)

x = 5 - 3 = 2

solution is (2, 3 )

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-2b - 6 + 3b - 2
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Hope this helped!
8 0
2 years ago
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2 years ago
Solve x - 20 &gt; -15, and then graph the solutions. Use pencil and paper. Explain how
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8 0
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Read 2 more answers
Evaluate 4m(3m-2) when m=-3.3
Bad White [126]
F(m)=4m(3m-2)
f(m)=12(m^2)-8m
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f(-3.3)=130.68+26.4
f(-3.3)=157.08
3 0
2 years ago
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