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# Simultaneous Equations using Substitution Method watch

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1. How do you Substitute:
a) 2x-y= 3
3x+2y= 8

b) 3x+7y= 27
5x+2y= 16
2. RDKGames I'll give you this one.
3. (Original post by S2M)
RDKGames I'll give you this one.
How very kind of you :P

(Original post by GCSE_18)
How do you Substitute:
a) 2x-y= 3
3x+2y= 8

b) 3x+7y= 27
5x+2y= 16
Substitution necessarily? Alright then.

a) The first equation is so you can replace the in the second equation with

b) Rearrange one of the equations to get either x or y on its own and substitute it into the other.
4. (Original post by RDKGames)
How very kind of you :P

Substitution necessarily? Alright then.

a) The first equation is so you can replace the in the second equation with

b) Rearrange one of the equations to get either x or y on its own and substitute it into the other.
Thank you

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Updated: January 29, 2017
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