# Maths

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- Created by: 11btaylo
- Created on: 11-11-15 12:01

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- Maths - Higher Revision
- Solving Equations:
- To solve an equation you have to find the value of X
- A simple example: 2n+1=n+4 2n=n+3 n=3
- To solve the equation you have to do the inverse operation.

- Equations including brackets would mean that you have to expand the brackets first.
- For example: 2(x+7)=5(3x+8)
- After expanding the brackets: 2x+14=15x+40
- Then continue to solve the equation as usual.

- After expanding the brackets: 2x+14=15x+40
- A Harder example: 3(4m-10)+5(2m-12)=20 12m-30+10m-60=20 22m-90=20 22m=110 m=5

- For example: 2(x+7)=5(3x+8)
- Some equations may have a fraction in them. To solve this, you must remember that the fraction line means the same as division, therefore to remove it, you multiply the number.
- For example: X/3 +5=9 X/3=4 X=12 in this example you had to -5 and then X3.

- Forming Equations:
- When asked to form an equation you must ensure that all of the terms are always equal to something.
- For example: a+40+2a+a-20=180
- This allows you to add or subtract things to both sides of the equation when solving.

- For example: a+40+2a+a-20=180

- When asked to form an equation you must ensure that all of the terms are always equal to something.

- Solving Equations:

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