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Mathematics
Mayra Vang
11 October, 22:39
The sum of two numbers is 17
The difference of those same two numbers is 3
+4
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Claudia
12 October, 00:51
0
The two numbers are 10 and 7.
10+7=17 and 10-7=3
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Ivan Richard
12 October, 02:18
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10 and 7
Step-by-step explanation:
Let unknown numbers be x and y
x + y = 10 ... (1)
x - y = 3 ... (2)
This leads to simultaneous linear equations
We shall solve the equation by substitution method
From equation (1), we shall make x subject of formula to form a new equation (3)
x + y = 17
x = 17 - y ... (3)
Now we substitute the value of x = 17 - y into equation (2)
x - y = 3
17 - y - y = 3
17 - 2y = 3
-2y = 3 - 17
-2y = - 14
y = 7
Now we substitute this new value of y = 7 into equation (1)
x + y = 17 ... (1)
x + 7 = 17
x = 17 - 7
x = 10
Therefore the two numbers are 7 and 10
7 + 10 = 17
10 - 7 = 3
x + 7
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