Answer:
b. 15a +20b
Explanation:
Given:
5 (3a+4b)
= 15a + 20b
a. 15a + 4b
Not equivalent
Equivalent
c.5a+3a+4b
= 8a + 4b
d. 5a+10a b+3b
= 15a + 4b
e. 10a +5a +15b +3b
= 15a + 18b
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