Sagot :
Answer:
1. x=y
x+a=y+a
example: y=4, x=4... 4+1=4+1
2. a+b=b+a
example: 4+5=5+4
3.a×b=b×a
example: 4×5=5×4
Step-by-step explanation:
Answer:
1. x=y
x+a=y+a
example: y=4, x=4... 4+1=4+1
2. a+b=b+a
example: 4+5=5+4
3.a×b=b×a
example: 4×5=5×4
Step-by-step explanation: