Question

please help me



please answer it​

Answer 1

a) 15+20+25=20+25+15

b) 80+42+65=65+42+80

c) 99+0=99

d) 45×87=87×45

e) 14+30+34=14+34+30

f) 200+300+400= 300 +400+200

g) 215+120+600=600+215+120

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