anh cj mo toan nang cao lop 5 tap 2 bai 168 giai giup em bai 1

May a cj  giup em bai nay vs a

Minh nay moi len lop 8 thui nen chua bit may ve toan lop 8 mong cac ban gai giup mk bai nay nha!!!

   2x.(x-5)-x.(3+2x)=26

Lam nhanh nhat mk tick cho !!!

cứu mk vs 

https://hoc24.vn/cau-hoi/giup-mk-bai-nay-vs-a-giai-theo-pp-lap-he-pt-

cua-lop-9-mk-can-loi-giai-chi-tiet-a.7681319128063

bai tap toan lop nam bai 168 ban nao giup minh nha minh tick cho

https://i.vietnamdoc.net/data/image/2017/04/14/bai-tap-on-tap-chuong-4-mon-toan-lop-7-2.jpg

cac ban vao trang nay giai giup mk phan trac nghiem nhe!

Moi nguoi oi, giup em bai toan phan so lop ̉ nay voi

    Tim phan so a/ab,(ab la so tu nhien co hai chu so) va phan so da cho bang phan so 1/6a

Giup minh giai 2 bai toan lop 6 nay !

a,x+(x+1) +(x+2)+......+(x+30)=620

b,2+4+6+8+.....+2X=210

giai giup mik bai 10 trang 8 trong sach bai tap toan lop 7 di cac ban

cac ban lam nhanh giup mik , mik dang can gap