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FrozenT [24]
4 years ago
7

HELP

Mathematics
1 answer:
Natasha2012 [34]4 years ago
5 0
<span>a − 3b = 9
a = b − 3
we replace a=b-3 for this equation </span><span>a − 3b = 9 and we have (b-3)-3b=9
or b-3-3b=9
and -2b=9+3
or -2b=12
and we have b=12:(-2)= -6
and a=b-3= -6-3= -9

The answer is </span><span>(−9, −6)</span>
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