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# Upper and Lower Bounds watch

Where can I find practice questions for this?
2. (Original post by DeclanGCSEs)

Where can I find practice questions for this?
3. thanks!
4. (Original post by DeclanGCSEs)

Where can I find practice questions for this?
Your Main Objective on such questions is to create the smallest value(Lower Bound) or the largest value (Upper Bound)

Solve past papers for practice
5. (Original post by TheValidStudent)
Your Main Objective on such questions is to create the smallest value(Lower Bound) or the largest value (Upper Bound)

Solve past papers for practice
Thank you, by any chance could you tell me how I can tell if to subtract or add a simultaneous equation?
6. (Original post by DeclanGCSEs)
Thank you, by any chance could you tell me how I can tell if to subtract or add a simultaneous equation?
Your main Objective is to eliminate a variable.

lets look at an example

2x+3y=13
-2x+4y=8

it would be most easy to eliminate 2x here. To eliminate it we must make it ZERO

We must Add 2x to -2x to make it a ZERO.
7. (Original post by TheValidStudent)
Your main Objective is to eliminate a variable.

lets look at an example

2x+3y=13
-2x+4y=8

it would be most easy to eliminate 2x here. To eliminate it we must make it ZERO

We must Add 2x to -2x to make it a ZERO.
Okay thank you

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