-3(4-2y)=24
Apply distributive property
-12+6y=24
Add 12 to both sides
6y=36
Divide both sides by 6
y=6
Answer:
4 flights of stairs in 5 minutes
Step-by-step explanation:
8/10 times 5
Supplementary angles sum up to 180°, suppose the supplement of 161° is x. Then
161+x=180
solving for x we subtract 161 from both sides
161-161+x=180-161
x=19
thus the supplement is 19°
