Two or more equations that share variables.

Example:two equations that share the variables x and y:

x + y = 6

−3x + y = 2

Those two equations are shown in this graph:

When we have as many equations as variables we

Example:two equations that share the variables x and y:

x + y = 6

−3x + y = 2

Those two equations are shown in this graph:

When we have as many equations as variables we

**may**be able to solve them. The solution for this example is where the lines cross at (1,5)
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