Construiti 1 mediatoare si 1 inaltime intru-un triunghi obtuzunghic, care corespund unei laturi alaturate unghiului obtuz
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Answer:
- <em>convert </em>the mixed fractions to improper fractions (where the numerator is greater than or equal to the denominator): multiply the whole number part by the fraction's denominator, add that to the numerator, write the result on top of the denominator.
- if the denominators are not the same, work out the common denominator and <em>rewrite </em>the fractions with the same denominators
- subtract by subtracting the numerators and writing the result over the denominator
- convert back to mixed fractions by dividing the numerator by the denominator, write down the whole number answer, write down the remainder above the denominator.
Example
convert to improper fractions:
common denominator = 3 × 5 = 15, so:
subtract:
convert back to mixed fractions:
Answer: The price of system at extreme electronics is $570 and the price of system at ultra electronics is $395.
Step-by-step explanation:
Let the price of the system at the ultra electronics be u
Let the price of the system at extreme electronics be e
According to question, we have
Now, using the substitution method, we will solve the above system of equations.
Now, put the value of u in the first equation :
Now, we put the value of u in the equation which is given by:
Hence, the price of system at extreme electronics is $570 and the price of system at ultra electronics is $395.