1200+1300+1200+1300x 100
= 1200+1300+1200+130000
= 2500+1300+1200+130000
=3800+1200+130000
=5000+130000
=135000
1200+1300+1200+1300x100= 1200 x2 + 1300 + 130000
= 2400 + 131300 = 133700
1200+1300+1200+1300x100= 2* 1200 + 1300 (1+100) = 2400 + 131300 = 133700
1200+1300+1200+1300x100
=2x1200+130000+1300
=2400+131300
=133700
1200+1300+1200+1300x100
= 1200 x 2 + 1300 x 2 x 100
= ( 1200 + 1300) x2 x 2 x 100
= 2500 x ( 2 x 2 ) x 100
= 2500 x 4 x 100
= 10000000
k nhék
chết, trả lời sai
1200+1300+1200+1300x100
1200+1300+1200+130000
2500+1200+1300+130000
3700+1300+130000
5000+130000
135000
1300 x 100 = 130000
130000 + 1200 + 1200 = 132400
132400 + 1300 + = 133700
1200 + 1300 + 1200 + 1300 x 100 = 133700
1200+1300+1200+1300x100=133700
số dây điện. Hỏi cửa hàng còn lại bao nhiêu mét dây điện?