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Aloiza [94]
3 years ago
10

Solve the following pair of simultaneous equation using elimination method.

Mathematics
1 answer:
sp2606 [1]3 years ago
3 0

Answer:

x = 1 and y = −2

Step-by-step explanation:

Rewrite equations:

x + 2y = −3

3x − 2y = 7

Step 1: Solve x+2y=−3 for x:

x + 2y = −3

x + 2y + −2y = −3 + −2y (Add -2y to both sides)

x = −2y − 3

Step 2: Substitute −2y − 3 for x in 3x − 2y = 7:

3x − 2y = 7

3(−2y − 3) − 2y = 7

−8y − 9 = 7 (Simplify both sides of the equation)

−8y − 9 + 9 = 7 + 9 (Add 9 to both sides)

−8y = 16

−8y/−8 = 16/−8 (Divide both sides by -8)

y = −2

Step 3: Substitute −2 for y in x = −2y − 3:

x = −2y − 3

x = (−2)(−2) − 3

x = 1 (Simplify both sides of the equation)

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<h2><u><em>If you rather have the link to get this info lmk!!</em></u></h2>

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"x" is just a placeholder. To avoid confusion let's just call it "input":

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Let's start:

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First we apply f, then apply g to that result:

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What if we reverse the order of f and g?

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5 0
3 years ago
VERY EASY
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Answer:

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5 0
1 year ago
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6 0
3 years ago
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William has a lemonade stand today he made $17.55 and lemonade sales and one-third that amount in cookie sales how much money di
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Answer:

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