Answer:
This could easily be answered with a culculator but the answer is 20.
Step-by-step explanation:
5x4=20
Answer:
<em>x = 9</em>
Step-by-step explanation:
Vertical angles are congruent, so their measures are equal.
4x + 6 = 7x - 21
Subtract 7x from both sides.
-3x + 6 = -21
Subtract 6 from both sides.
-3x = -27
Divide both sides by -3.
x = 9
Awnser ::::::: There are no signs in the problem
