Answer:15
Step-by-step explanation:
27+x=42 alternate angles are equal
Collect like terms
x=42-27
x=15
Answer:
If they're equal set them equal to each other if they're supplementary you set up an equation. Where you add them up and set them equal to 180. And then you just want to solve for X.
U can use the second last one
X + 90 = 2x + 40
Did you add a photo? I cant see one
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