Answer:
True
Step-by-step explanation:
Bcs, in the equation x+(-x)=0 you do x-x ( which is basically x+ -x) and they cancel each other out. This means your equation is 0=0
A) 3x+4=21
3x=21-4
3x=17
x=17÷3
x= 5.7
x equals to 25 and y equals to 10.
It would be 24 because 1 dozen = 12×2= 24
2700 (1-4%) 5. population by 2020 would be 2201
