# Question #901a6

##### 2 Answers

Dec 17, 2017

#### Answer:

#### Explanation:

It is given that;

Subtract

Hope it helps!

Dec 17, 2017

#### Answer:

Graphical approach

#### Explanation:

The other answers are the most efficiant means of solving this question, but i just wanted to provide a graphical interpritation:

Red

Blue

Where these two lines intersect, that is the solution to the problem:

Hence we see they cross at

Im not sure if you learnt about grpahs of lines, but when you do, this is an interesting way of thinking about it!