add :5a+4b and 3a+9b
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Answered by
1
( 5a + 4b ) + ( 3a+9b )
=> 5a + 3a + 4b + 9b
=> 8a + 13b
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Answered by
0
Answer:
The answer is 8a + 13b.
Step-by-step explanation:
= (5a+4b) + (3a+9b)
= 5a + 4b + 3a + 9b
= 5a + 3a + 4b+ 9b
= 8a + 13b
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