# How do you solve the following system: #2x+7y=1, 6x + 7y = -9 #?

##### 2 Answers

#### Answer:

By arranging it, it can be calculated that

#### Explanation:

The first equation can be rewritten

Combine these two equations:

or

Now put value in the first original equation:

The answer is

#### Answer:

#### Explanation:

Note that the number of

The difference in the the totals therefore represents the difference in the number of

Substitute

Check in A:

This is correct.