Answer:
x = 12
Step-by-step explanation:
The angles opposite each other when two lines cross. They are always equal.
so:
3x + 9 = 45
3x = 45 - 9
3x = 36
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Answer:
x = 12
Step-by-step explanation:
The angles opposite each other when two lines cross. They are always equal.
so:
3x + 9 = 45
3x = 45 - 9
3x = 36
x = 12