Math and Arithmetic

Algebra

Linear Algebra

# How do you solve multivariable equations?

###### Wiki User

###### 2009-02-19 05:33:17

You need as many equations as you have variables.

## Related Questions

###### Asked in Math and Arithmetic, Algebra, Linear Algebra

### How does writing equivalent equations help you solve a system of equations?

You can write an equivalent equation from a selected equation in
the system of equations to isolate a variable. You can then take
that variable and substitute it into the other equations. Then you
will have a system of equations with one less equation and one less
variable and it will be simpler to solve.

###### Asked in Algebra

### How doI solve system of equations by substitution?

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.