Solve the System by Using Either the Substitution Method or the Elimination-By-Addition

question 182

Short Answer

Solve the system by using either the substitution method or the elimination-by-addition method, whichever seems more appropriate. $$\left( \begin{array} { c c c c } t & =& 9 u & + & 13 \\7 t & - &7 u & = & - 77\end{array} \right)$$ If the equations of the system are dependent, or if a system is inconsistent, so indicate. In those cases enter dependent or inconsistent . Otherwise, enter your answer as an ordered pair ( t , u ).

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Definitions:

Exchange Rate

The price at which one currency can be exchanged for another currency.

Units

Refers to a measure of quantity or amount in a specified dimension such as length, mass, time, etc., or in the context of economics and finance, the smallest portion of a product or financial instrument.

Percent Saving

The percentage of the original price saved as a result of a discount or offer.

U.S. Border

The geographical boundary separating the United States from neighboring countries.