5NHAN 25%COONG12 NHAN30% TRU9 NHAN50% = Question 5NHAN 25%COONG12 NHAN30% TRU9 NHAN50% = in progress 0 Toán Mackenzie 1 năm 2021-10-27T21:21:16+00:00 2021-10-27T21:21:16+00:00 2 Answers 7 views 0
Answers ( )
5×25%+12×30%-9×50%
= 125%+360%-450%
=485%-450%
=35%
5 × 25% + 12 × 30% – 9 × 50%
= 5 × 0,4 + 12 × 0,3 – 9 × 0,5
= 2 + 3,6 – 4,5
= 5,6 – 4,5
= 1,1