\(3\dfrac{2}{5}-\dfrac{2}{5}+2\)
\(=\dfrac{3\times5+2}{5}-\dfrac{2}{5}+2\)
\(=\dfrac{17}{5}-\dfrac{2}{5}+2\)
\(=\dfrac{15}{5}+2\)
\(=2+3=5\)
\(3\dfrac{2}{5}-\dfrac{2}{5}+2=\dfrac{17}{5}-\dfrac{2}{5}+2=\dfrac{15}{5}+2=3+2=5\)...
\(3\dfrac{2}{5}-\dfrac{2}{5}+2\)
\(=\dfrac{3\times5+2}{5}-\dfrac{2}{5}+2\)
\(=\dfrac{17}{5}-\dfrac{2}{5}+2\)
\(=\dfrac{15}{5}+2\)
\(=2+3=5\)
\(3\dfrac{2}{5}-\dfrac{2}{5}+2=\dfrac{17}{5}-\dfrac{2}{5}+2=\dfrac{15}{5}+2=3+2=5\)...
tính nhanh p/s 1+ 5/4 + 5/8 + 5/16 + 5/32 + 5/64
b) 1/3 +1/9 + 1/27 + 1/81 +...........+ 1/59049
c) 3/2 + 3/8 + 3/32 +3/128 + 3/512
d) 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + 1/128 + 1/256 giúp mình với
1.b=5/2+5/6+5/18+5/54+5/162+5/486
2.c=3/2+3/8+3/32+3/128+3/512
5/2+5/4+5/8+5/16+5/32+5/64+5/178+5/256 giải giùm ! thank
Bài tập 6:Tính nhanh
A) 3/4 + 2/5 + 1/4 + 3/5 =....
B) 2/3 x 3/4 x 4/5 x 5/6 =...
C) 4/5 x 3/7 + 4/5 x 4/7 =...
D) 2/5 x 7/4 - 2/5 x 3/7 =...
E) 75/100 + 18/21 + 19/32 + 1/4 +3/21 + 13/32 =....
ai lam to tick cho
1. 4 + x = 7 - 2x
2. 5 + x = 8,3 + 4,7 - x
3. x + 12 = 35 + ½x
4. 6 + x = 7⅓ + 2 - x
5. 20x + 4 = 19,2 + 15x
6. x + 5 = 8 2/5 - 4x
7. 3 (x +1) = 13,5
8. 32 - (32 - x) = 32
9. 5x - 12 3/5 = 0
10. x - 10/3 = 0
P/s : Please, help me 😋😋
5/2+ 5/4 + 5/8 + 5/16 + 5 /32 + 5/64
ghi cach lam cu the
tính : 2- { 3+ 5 [ -12 + 5 - ( -3 + 7 ) - 12 ] + 32 }
tính
a. 8/5+7/6+5/9-2
b.3-5/6-4/9+32/24
Tính nhanh
a 75/100 + 18/21 + 19/32 + 1/4 + 3/21 + 13/32
b 4 và 2/5 + 5 và 6/9 + 2 và 3/4 + 1/4 + 1/3 + 3/5
mik cần gấp các bn ơi
a,1+5/4+5/8+5/16+5/32+5/64
b,3/2+3/8+3/32+3/128+3/512
c,3+3/5+3/25+3/125+3/625
ai giải được mình cho 5nine luon