You have to fill in 3 for x so it woul look like 3x3-3 and that would be 6.
To find the measure of angle a, subtract 151 from 180. (Reason: line w equals 180º, and the second angle is the same size as the 151º angle.)
180 - 151 = 29
<h2>Answer:</h2>
<u>Angle a = </u><u>29º</u>
Answer:

Step-by-step explanation:

Subtract 7 from both sides.

Multiply both sides by v.

Multiply both sides by 1/(y - 7).
