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Airida [17]
3 years ago
11

Solve the simultaneous equations by substitution 3 x − 7 y = − 10 x = 5 y + 2

Mathematics
1 answer:
mojhsa [17]3 years ago
5 0

Answer:

3x-7y=-10_{(1)} \\x=5y+2_{(2)}\\

Substituting Equation 2 into equation 1

3(5y+2)-7y=-10_{(3)} \\15y+6-7y=-10\\15y-7y+6=-10\\8y+6=-10\\8y=-10-6\\8y=-16\\y=\frac{-16}{8} \\y=-2\\

Substitute the value of y into Equation 2

x=5y+2\\x=5(-2)+2\\x=-10+2\\x=-8\\

Therefore x=-8, y=-2

Step-by-step explanation:

Have a nice day :)

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Vinil7 [7]

Answer: 1296π

Step-by-step explanation:

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3 years ago
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3 years ago
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murzikaleks [220]
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8 0
3 years ago
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Stolb23 [73]

Answer:

Gabrielle is 69 while Mikhail is 23.

Step-by-step explanation:

Let G represent Gabrielle's age and M represent Mikhail's age.

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Step-by-step explanation:

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