[ (12 - n)/7 ] = -1
12- n = -7
-n = -19
n = 19

1. Both are corresponding angles, hence they both are equal, so,

Ans. C) 2
2. They both are in interior corressponding, hence their sum is equal to 180°, so,

Ans. D) 7
3. They both are in interior corressponding, hence their sum is equal to 180°, so,

Ans. A) -10
4. Both are corresponding angles, hence they both are equal, so,

Ans. A) 6
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Answer:
the first answer
3 1/3 that's the correct answer
These two angles are corresponding angles, so x = 136 degrees