Answer:
3x+180=0 x= -60
Step-by-step explanation:
equal everything to 0.
3x+180=0
3x= -180
x= -60
Answer:
3
Step-by-step explanation:
3 times 3 is 9 plus 12 is 21....3 times 7 is 21.
Wish I could help I’m not good at math
Answeryour answer ais A
Step-by-step explanation: 100/2=50 40/2=20 2/2=1 50+20+1= 71 142/2=71
ihope this helps