3 years ago

Please! Help! (due by tonight)

Mathematics

2 answers:

Oduvanchick [21]3 years ago

6 0

Answer: a + 3b

Step-by-step explanation:

Okay, so...

7(3a - 2b) = 7(3a) - 7(2b) ... distributive property

21a - 14b

5(3b - 4a) = 5(3b) - 5(4a) ... distributive property

15b - 20a

(21a - 14b) + (15b - 20a) = 21a -12b + 15b - 20a =

a + 3b

vampirchik [111]3 years ago

5 0

Answer:

21a-14b

15b-20a

Step-by-step explanation:

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