Let blank =x
4+x=3+4
4+x=7
-4 -4
x= 7-4
x=3
blank is 3
Answer:
8
Step-by-step explanation:
from A to B it's 8 units long
Answer:
8
Step-by-step explanation:
You must try to remove one of the unknown variables from the system by multiplying one in a way that when adding (or subtracting) one to another “makes it disappear” and so whatever value you get can be substituted back in to get the other unknown!