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bombo99
17.02.2021 •
Mathematics
Write a system of equations to describe the situation below, solve using any method, and fill in the blanks. Samir is thinking of two numbers. Adding 5 times the first number and 4 times the second number gives a total of 21. Also, adding 5 times the first number and 9 times the second number gives 16. What are the two numbers?
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Ответ:
the first number is 3.4 and the second number is 1
Step-by-step explanation:
The computation of the two numbers is shown below:
Let us assume the first number be x
And, the second number be y
Now the equations are
5x + 4y = 21
And,
5x + 9y = 16
Now subtract equation 2 from equation 1
-5y = -5
y = 1
And, the x is
5x + 4 = 21
5x = 17
x = 3.4
Hence, the first number is 3.4 and the second number is 1
Ответ:
how?
double what adrianne sold is 2a
6 less than what adrainne sold is 2a-6