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lakkis [162]
3 years ago
13

PLEASE HELP!!!! i need help on all of these but if you only have 1 answer that’s still great

Mathematics
2 answers:
hodyreva [135]3 years ago
7 0

Answer:

n = -6

x = -7

n = 27

Step-by-step explanation:

Question 1

-3n - n + 12 = 36

First we get all the variables to one side using subtraction property of equality.

-3n - n + 12 (-12) = 36 (-12)

-4n = 24

divide by the coefficient of n to isolate the variable

-4n/-4 = 24/-4

n = -6

Question 2

-2x - 3x - 15 = 20

-5x - 15 = 20

-5x = 35

x = -7

Question 3

3 + n/9 = 6

Isolate the n variable

n/9 = 6 - 3

multiply by 9

n = 27

lesantik [10]3 years ago
6 0

Answer:

1. n = -6

2. x = -7

3. n = 27

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