Answer:
80
Step-by-step explanation:
180-(60+40)=180-60-40=180-100=80
The anwser is ten because the number i saw is 14 estimate is ten.
-3(2r+7)=3
distribute -3
-6r-21=3
add 21 to both sides, this causes the 21 on the left to cancel itself out.
-6r=24
divide each side by -6, this causes the -6 on the left side to cancel itself out.
r=-4
