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18a+-2a+-10a + -10b+12b+6b
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Oct 7, 2017
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18a+-2a+-10a + -10b+12b+6b
Mathematics
middle-school
Nishank Singla
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just add/subtract the numbers with the same letters
[18-2-10]a + [-10+12+6] b
6a + 8b
Nic Gibson
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Oct 9, 2017
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Nic Gibson
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4
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we will separate the numbers
18a+-2a+-10a
-10b+12b+6b
RULES:
+ with + = +
- with - = +
+ with - = -
we will have 18a-2a-10a (we applied the last rule)=
6a
-10b+12b+6b= it's not wrong if we write
12b-10b+6b=
8b
Putting all togheter, we will have
6a+8b
Natetitterton
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Oct 14, 2017
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Natetitterton
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