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Reil [10]
2 years ago
6

BRAINLIESTT ASAP! PLEASE HELP ME :)

Mathematics
1 answer:
vfiekz [6]2 years ago
8 0

Answer:

Final answer is approx 6.644 years.

Step-by-step explanation:

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A first number plus twice a second number is 14. Twice the first number plus the second totals 10. Find the numbers.
Nookie1986 [14]

Answer:

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This is an example of a simultaneous equation.

First write this word problem as equations, where x is the "first number" that you've mentioned and y is the "second number".

x + 2y = 14  (equation 1)

2x + y = 10  (equation 2)

This is solved using the elimination method.

We need to make one of the coefficients the same - in this case we can make y the same. In order to do this we need to multiply equation 2 by 2, so that y becomes 2y.

2x + y = 10 MULTIPLY BY 2

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Now subtract equation 1 from equation 2.

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Now we substitute our x value into equation 1 to find the value of y.

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