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vodomira [7]
3 years ago
13

Explain how a solution found using substitution can be checked.

Mathematics
1 answer:
DENIUS [597]3 years ago
4 0
A solution can be found using substitution by substituting the ordered pair into both of the original equations.
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Answer:

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8 =  \frac{1}{3} (a + 5) \\ 8 =  \frac{1a}{3}  + 1.67 \\ 3 \times 8 =  \frac{1a}{3}  + 1.67 \times 3 \\ 24 = a + 5.01 \\ 24 - 5.01 = a + 5.01 - 5.01 \\ 18.99 = a

Therefore a = 18.99

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