Reflection: Linear Equation

Today I worked on linear equations, its easy, if you have:

11x + 4y =-46

7x – 4y = 10

You add  the 11x and the 7x and subtract 4y by 4y so now you have:

  • 18x = -36
  • 18x = 18

So now you divided, 18 crosses out and the 36 can be divided by -2:

so x =-2

Now you get the 7x -4y=10 and plug in the -2 in the 7x, you should get:

7(-2) – 4y = 10

Now multiply and you should get:

-14 – 4y = 10

Now add 14 to -14 so you can move it over to the 10, you should get:

-4y = 24

Now you divide -4 by both numbers:

  • -4y = 24
  • -4  = 4

So -4 crosses out and you should end up with:

Y=-6

So you answer should Be:

  • X= -2
  • Y= -6

And That’s It!   🙂

 

Over the last like 40 minutes I’ve been thinking about the design of the Derby Car.

 

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