bai 1 tinh gia tri cua bieu thuc 78 x m + 22 x m voi m =135
bai 2 tinh gia tri cua bieu thuc 78 x m + 42 x m -20 x m voi m =1035
bai 3 cho bieu thuc B = 119 x n - n x 9 bieu thuc B co gia tri bang 8470 khi n =............
voi A = 2 gia tri cua bieu thuc A la
A =
tim gia tri cua bieu thuc a de bieu thuc A co gia tri lon nhat tim gia tri lon nhat do
1.tinh gia tri cua bieu thuc
a)45 x 789 +15 x 263 + 60 x 789 - 10 x 789
b)234 x 17 + 34 x 117 + 198 x 78
giup mk nhe thanks
Cho bieu thuc A = 2002 + 690 : ( a + 3 )
Tim gia tri cua a de bieu thuc A = 2005
giup minh
tim trung binh cong cua 3 so bang so lon nhat co hai chu so,biet so thu nhat bang so thu hai va bang 78, tim so thu ba
tim gia tri lon nhat cua a+b-c . voi dieu kien a;b;c deu la so co 3 chu so
Tich cua hai so tu nhien la 78.Tim hai sô đó
tim mot so biet 65% cua no la 78 so do duoc tinh la ?
TIM GIA TRI LON NHAT CUA PHAN SO A/B BIET:ACO THE NHAN TRONG CAC GIA TRI 11 ; 13; 17; 20 VA B CO THE NHAN MOT TRONG CAC GIA TRI 4; 7 ;25;36