2 – X = ½ 285 + X = 26 X 845

3/ - bai-tap-toan-lop-2-phep-cong-co-nho
Lớp 4 bai-tap-toan-lop-2-phep-cong-co-nho

3/2 – x = ½ 285 + x = 26 x 845