Tuesday, 1 April 2008

Simultaneous equations

NB This for the HIGHER tier only!

Solving by substitution:

Solving by graphical means:

1 comment:

Nadar said...

Steve this how i done it but still something is wrong when
6(2x - 3) = 42
I divide both sides by 6:(2x - 3) = 7
I lose the brackets add 3 to both sides so the answers must be 2x=9 with calcultor it give me 2x=10 to make 10 where did the other number that makes 10 come from ? I have no idea


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