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Assuming the simplest case of two equations in two variable: solve one of the equations for one of the variables. Substitute the value found for the variable in all places in which the variable appears in the second equation. Solve the resulting equation. This will give you the value of one of the variables. Finally, replace this value in one of the original equations, and solve, to find the other variable.
What else can I help you with?
Why did the Germans invade Russia?
Because Adolph Hitler was a Doi-doi-doi.
What is bigger a zebra or a chimp?
An elephant. Doi doi
Why are groups form?
Because they felt like it. DOI DOI
How tall is Misa Doi?
Misa Doi is 5' 7".
When was Peter Doi born?
Peter Doi was born in 1892.
When did Peter Doi die?
Peter Doi died in 1970.
When was Takeo Doi born?
Takeo Doi was born in 1920.
When did Takeo Doi die?
Takeo Doi died in 2009.
When was Masaki Doi born?
Masaki Doi was born in 1960.
When was Toshiyuki Doi born?
Toshiyuki Doi was born in 1978.
When was Ryuichi Doi born?
Ryuichi Doi was born in 1939.
What is Choeng Doi's population?
The population of Choeng Doi is 10,750.
