Transposing help

[clinton_09]

hi im terrible at transposing, i was hoping someone could show me the methods of transposing that first equation. Thanks 


For the pair of simulatenous equations

4x= 7-y

5x+7y=3

the solutions are:

[Flaming_Arrow]

so we can sub that into the 2nd equation












and we can sub x into any equation to get to value of y





or

[RD]

Wow.. a year 11 teaching a year 12, who would've thought!!

(Btw, I'm as bad as you on transposing clinton )

[clinton_09]

thanks chath