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mr_godi [17]
3 years ago
13

One number is 5 more than another number. their sum is −15 . what are the numbers?

Mathematics
1 answer:
Aliun [14]3 years ago
6 0
X=5+y
x+y=-15

subsitute 5+y for x

5+y+y=-15
5+2y=-15
minus 5 from both sides
2y=-20
divide both sides by 2
y=-10

sub back
x=5+y
x=5-10
x=-5

the numbers are -10 and -5
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