NB This for the HIGHER tier only!
Solving by substitution:
Solving by graphical means:
Electricity row game
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1 comment:
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
Nadar
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