Tìm x a, (x × 0,25 + 2012) × 2013 = (50 + 2012) × 2013
Giải thích
a) (x × 0,25 + 2012) × 2013 =(50 + 2012) × 2013
x × 0,25 + 2012=50 + 2012
x × 0,25 =50x = 50: 0,25x=200
a) (x × 0,25 + 2012) × 2013 =(50 + 2012) × 2013
x × 0,25 + 2012=50 + 2012
x × 0,25 =50x = 50: 0,25x=200