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Byju's Answer
Standard VII
Mathematics
Number Properties (Language)
Add the follo...
Question
Add the following:
(i) 7abc,
−5abc, 9abc, −8abc
(ii) 2x
2
y, − 4x
2
y, 6x
2
y, −5x
2
y
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Solution
Adding the given terms, we have
(i) 7abc + (- 5abc) + (9 abc) + (- 8abc)
= 7abc - 5abc + 9abc - 8abc
= (7 - 5 + 9 - 8)abc
= (16 - 13)abc
= 3abc
(ii) 2x
2
y + (- 4x
2
y) + 6x
2
y + (- 5x
2
y)
= 2x
2
y - 4x
2
y + 6x
2
y - 5x
2
y
= (2 - 4 + 6 - 5)x
2
y
= (8 - 9)x
2
y
= -x
2
y
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