alemarqbae alemarqbae

06-05-2016
Mathematics

contestada

factorise 80 x + 30 need explaining clearly please

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Dontthankmebrainme Dontthankmebrainme

06-05-2016

80 (x) + 30

80+30=110*

110(x)

30-110-80(x)

80-30=50-110=(x)+110+30+50/(x)

X has no solution

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apologiabiology apologiabiology

06-05-2016

remember distributive
a(b+c)=ab+ac
reverse
ab+ac=a(b+c)
find a which is GCF

factor them and group

80x=2*2*2*2*5*x
30=2*3*5
GCF=2*5=10
a=10
80x+30=10(8x)+10(3)=10(8x+3)

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