رم
a- 2b -3c + 4d
upon
a+ 2b - 3c- 4d
please send fast
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Answer:
-b
+b
Step-by-step explanation:
a- 2b -3c -4d
a+ 2b - 3c- 4d
■ a, -3c ,-4d is cancelled by same value
■ -2b ● -b = 2
+2b +b 2
■ 2 cancelled by same value
then,
-b
+b
your answer is -b
+b
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