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cheerthi16
07.11.2020 •
Mathematics
Sara was thinking of a number. Sara doubles it and gets an answer of 99.7. What was the original number?
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Ответ:
49.85
Step-by-step explanation:
just divide it by 2
Ответ:
-2x+8=x-1
add 2x to both sides
8=3x-1
add 1
9=3x
divide 3
3=x
sub
y=x-1
y=3-1
y=2
(x,y)
(3,2)