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diamong [38]
3 years ago
5

Help!! Will mark brainliest

Mathematics
2 answers:
valina [46]3 years ago
7 0

Answer:

is it not also 43

Step-by-step explanation:

devlian [24]3 years ago
3 0

Answer:

43

Step-by-step explanation:

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What is the value of x and y if 21x+7y=42 and -5x+5y=10 are equal
nikdorinn [45]

Answer:

-5x/5 +5y/5=10/5=2

y-x=2

y=x+2

21x+7*(x+2)=42

21x+7x+14=42

28x=42-14

28x=28

x=1

y=1+2

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Step-by-step explanation:

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Anuta_ua [19.1K]

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Step-by-step explanation:

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2 years ago
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8 0
3 years ago
France can complete 91 oil changes in 7 days how may oil changes can frances complete in 7 days
arsen [322]
Let oil change be x
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<span>143 = x Ans</span>
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Please help with this math expression
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Answer:

A

Step-by-step explanation:

add together like terms.

5 0
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