Prove that the subset of the set of integers...

can someone please help me with this question:

 

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1 Answer

me thank wot him sae is...

for integers, for all or NE x,y yu selekt the equashun

1265x + 2070y=c will giv yu c=m*115, weer c=integer >=1

him sae in parens, that 1265=mx*115 & 2070=my*115

so yu hav (mx+my)*115

so hart av the statement is ....produkt m*x....anser gotta be integer wen m& x=integer

that statement is true

but me dont no wot yer teech will aksept as proof it be true
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