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RideAnS [48]
3 years ago
13

The sum of two numbers is 30 and their difference is 20

Mathematics
2 answers:
Zanzabum3 years ago
5 0

5 and 25

Step-by-step explanation:

LekaFEV [45]3 years ago
3 0

Answer:

X=25, Y=5 ;the numbers are 25 and 5

Step-by-step explanation:

Let the numbers be X and Y

X - Y= 20; from statement 2.

X= 20+Y

But

X + Y= 30 from statement 1;

Meaning

20 + Y + Y= 30

20 + 2Y = 30

2Y= 10

Y=5

X=20+ Y

X= 20+ 5= 25

X=25, Y=5

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Which is another way to check the sum of 104+34+228+877?
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The answer is digit sum method.

Digit sum method is method used to check the sum of sum numbers. If the sum of all of the digits of numbers is equal to the sum of all of the digits of the total sum, then the arithmetic process was correct.

We need to check the sum of <span>104+34+228+877:
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▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

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