Answer:
Step-by-step explanation:
These are vertical angles. (Adjacent angles touch each other on one side.)
To solve set the two angles equal to each other. 7x-8=4x+19.
Get like terms on the same side. Subtract 4x from both sides and combine like terms. 3x-8=19. Add 8 to both sides and combine like terms. 3x=27.
Divide both sides by 3 to get x=9.
