Question

Tìm x :

42x + 37 . 42 = 39 .42

Answer 1

42x+37.42=39.42

42x=39.42-37.42

42x=42.2

=> x=2

Answer 2

42x + 37 . 42 = 39 .42

42x+1554=1638

42x=1638-1554

42x=84

x=84:42

x=2

Vậy x=2