# How do you solve the system of equations #-2x+4y=7# and ##?

##### 1 Answer

Nov 5, 2017

Suppose the second equation was :

then

#### Explanation:

The only way to clear this question (after a year with no correction) seems to be to add the missing component. The additional equation

[1]

[2]

Multiplying [1] by

[3]

Adding [2] and [3]

[4]

Dividing both sides of [4] by

[5]

Substituting

[6]

[7]

[8]