Answer:
mXY = 21
Explanation:
mWX and mXY must add up to mWY
Step 1: Set up equation
mWX + mXY = mWY
a + (a + 6) = 36
Step 2: Solve for a
- Combine like terms: 2a + 6 = 36
- Subtract 6 on both sides: 2a = 30
- Divide 2 on both sides: a = 15
Step 3: Find mXY
mXY = a + 6
mXY = 15 + 6
mXY = 21