Id say you would do it the same as you do to , multiply them all out so you can take it away etc juct having to find out one other number.
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Simultaneous equations are where you have multiple equations, often coupled with multiple variables. An example would be x+y=2, x-y=2. To solve for x and y, both equations would have to be used simultaneously.
Then they are simultaneous equations.
They are simultaneous equations
Can't be done unless you have another equation with the same x and y. Then you would solve for simultaneous equations.
You can solve the system of equations with three variables using the substitute method, or using matrix operations.