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3 years ago

8

7x-4 (6-x) +12. if x=6

2 answers:

Hunter-Best [27]3 years ago

6 0

<span>7x-4 (6-x) +12
Substitute 6 for x.
7(6) - 4(6 - 6) + 12
Use distributive property(Multiply -4 by 6 and -6)
7(6) - 24 - 24 + 12
Multiply 7 by 6
42 - 24 - 24 + 12
Subtract 24 from 42
18 - 24 + 12
Subtract 24 from 18
-6 + 12
Add
Final Answer: 6</span>

Darina [25.2K]3 years ago

4 0

We just need to substitute in 6 whether we see an x:

(7*6) - 4*(6-6) + 12
= 42 - 4*0 + 12
=54

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