# Question #28ac8

##### 1 Answer

Feb 15, 2017

#### Answer:

The two lines described by the equations cross at (1, 2)

#### Explanation:

Assuming the question asks to find where the two lines cross

or to find a common solution for the two equations

Using subtraction

Equation 1

Equation 2

Multiply equation 1 by a factor of 2 to give equation 3

Subtract equation 3 from equation 2

Simplify

Substitute 1 for x in equation 1

simplify

Therefore the two lines described by the equations cross at (1, 2)