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mel-nik [20]
3 years ago
5

Find the value of two numbers if their sum is 12 and the difference is 4

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
4 0

x+y=12

x-y=4

x=y-4

y-4+y=12

2y-4=12

2y=16

y=8

x=8-4=8

8+4=12

 the 2 numbers are 8 & 4


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Travis writes 72=9×8. Is he correct? Explain at least 2 strategies Travis can use to check his work.
Neporo4naja [7]

( Don't cheat, use your own words) He is correct. 9 x 8 = 72

He can check his math by doing 72 ÷ 9 = 8 and 72 ÷ 8 = 9

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3 years ago
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lana66690 [7]

Answer:

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Step-by-step explanation:

Let's solve your equation step-by-step.

6−8x=7x−10x−24

Step 1: Simplify both sides of the equation.

6−8x=7x−10x−24

6+−8x=7x+−10x+−24

−8x+6=(7x+−10x)+(−24)(Combine Like Terms)

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Step 2: Add 3x to both sides.

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Step 3: Subtract 6 from both sides.

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Step 4: Divide both sides by -5.

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4 0
3 years ago
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wolverine [178]
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Mandarinka [93]

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Step-by-step explanation:

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