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stevewu168168
23.02.2021 •
Mathematics
водяной бак наполняется двумя трубами за 2 часа. Первая трубаможет наполнить его на 3 часа скорее чем вторая. За сколько времени первая труба может наполнить бак
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Ответ:
The variable here is what Jesse got on the first day. Let's call it "x".
x-6=0
x is the first day's score, -6 is the second day's score, and the total score is zero.
Now, add 6 to both sides.
x-6=0
+6 +6
x=6
Jesse's score for the first day was (+)6.