Các câu hỏi tương tự
18x(19191919/21212121+88888/99999 va 4 2/5+1/3+5 6/9+1/4+2 3/4+2/5 va (5/111111+5/222222-4/3x7x11x13x37)x10101 va 1/2x 2/3x 3/4x 4/5x 5/6x 6/7x 7/8x 8/9x 9/10 va 7/4x (3333/1212 +3333/2020 +3333/3030 +3333/4242)
21X-5x2+3-7=7xX
21X-5x2+3-7=7xX
39x(64-21)+21x(39+64) tinh nhanh
18x(19191919/2121212188888/99999)
Tinh B = 21x a +19x b a+b với a+b = 15
Cho 12 x15 x18 x 21x .....x 43= 122*80240
Tim *
\(21x\frac{5}{6}=?\)
kb voi mk nhe !
2018 x x=18x x+200