Answer:
Hope this helps.
Step-by-step explanation:
Complementary angels are two angles that equal 90 when added so S degrees + Z degree = 90 degrees or 50 degree + 40 degree = 90 so forth 4B in comments
18 and 6
4x= 18+6
4x=24
x=24/4
x=6
4x= 6×4
24
2x+3
6×2
12+3
15
