# Simultaneous Equations!

A bit of maths, hope it's okay and easy enough to understand.

- Created by: Katie Mostyn
- Created on: 06-05-10 19:05

First 108 words of the document:

SIMULTANEOUS EQUATIONS!

How to work them out:

Easy (1) 5x +5y =10

(2) 5x+ 3y = 8

1) Take away the x's

2) Then take away the 3y from 5y and 8 from 10.

5y 3y = 2y

10 8 = 2

Then you have:

2y = 2

Y = 1

Substitute the y value into just one equation (either (1) or (2)) to find out the x value:

(1) 5x + (5 x 1) = 10

5x + 5 =10

Then simply take the 5 from 10 so you are left with:

5x = 5

X = 1!

And so

X = 1 Y= 1

Have a go yourself:

1) 3x + 2y = 17 2) 5x + y = 17 3) 5x 4y = 27

5x + 2y = 27 3x + y = 11 2x 4y = 12

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