Các câu hỏi tương tự
tính x (x+3\10)+(x+3\40)+(x+3\88)=31\22
(x + 10) x 3 = 120
x + 10 = 120 : 3
x + 10 = 40
x = 40 - 10
x = 30
Tính: S = 1 x 2 + 2 x 3 + 3 x 4 + .... + 39 x 40
Ai làm hộ cái coi :''3
Tính: S = 1 x 2 + 2 x 3 + 3 x 4 + .... + 39 x 40
Tìm x biết
( 3 x X - 16 ) x 343 - 2 x 2401
3/10+3/40+3/88+3/154+3/238+3/340+3/460
Tính nhanh
27 : 3 + ( 8 x 4 - 2,3 x 10 ) + ( 15 x 3 - 12 x 3 )
6,2 x 2 + 6,2 x 3 + 6,2 x 4 - 11,5 - 17,7 - 23,9
P/S : nhớ ghi cách giải. Thanks
tim x:
(x-2)*2=876
b) (x*3)-2=88
c)(x:3)+2=900
1. Find x, given that:
\(\left(x+\frac{1}{3}\right)+\left(x+\frac{3}{40}\right)+\left(x+\frac{3}{88}\right)=\frac{31}{22}\)
2. The arithmatic average of three numbers is equal to 13.5 . The average of the first number and second number is 13, and the average of the second number and third number is 13.85 . Find the three numbers.
3. Compare A and B, given that:
A = 2.015 x 201.7
B = 20.16 x 20.16