1 + 2 x 3 + 4 - 5
=1 + 6 + 4 - 5
= 11 - 5
= 6
1 + 2 x 3 + 4 - 5
=1 + 6 + 4 - 5
=6
Đúng cho mình một sp nhé
5/2x3/7-3/4:7/3=
5/4:15/12-5/4:1/2=
1/26+7/30+12/26+8/3
1/1x2 +1/2x3+1/3x4+1/4 x 5......... 1/999x1000+1
y x 1/2x3/4+y:8/5-y/2=1/2
b1 tinhs
a,6/7 :(1/2x3/4)-5/8
tinh :
a. A=1/1 x2 cong 1/2x3 + 1/3x4 + ... + 1/99x100
b. B=4/1x3+4/3x5 +4/5+7 +... +4/51x53
\(\frac{1}{2x3}\)+\(\frac{1}{3x4}\)+\(\frac{1}{4x5}\)+\(\frac{1}{5x6}\)
=\(\frac{3-2}{2x3}\)+\(\frac{4-3}{3x4}\)+\(\frac{5-4}{4x5}\)+\(\frac{6-5}{5x6}\)
Làm tiếp phần còn lại của phép tính ?
5-4/2x3 + 6-5/3x4 8-7/4x5+ 9-8/5x6
Tìm X:
a,2xX-5=21
b,3/4+1/4xX=5/6
c,7/8-1/2xX=5/6
d(1/1x2+1/2x3+1/3x4)x100-[5/2:(X+206/100)]:1/2=89
TÍNH NHANH:1+1x2+2+2x3+6x8+5x5+9x2-3-8-1-1-3-4+6-8+5-7+6+56x10+23x10+135x100+234x100+1005x1000+10000x10000=?
