3/5+0,5-1/4+7/2 phần -6/5+1/6-13/5+0,5
-8/2-1,3+19/9+13/2 phần 2-0,5+1/3-9/3
Bài 1: a, x + 0,5 = -2/3 b, x - (-2/5) = 5/7 c, 5/4 - 6x = 7 1/2 d, 3 - 2x - (5/4 - 7/5) = 9/20 bài 2: a, x : (-2/3) mũ 3 = -2/3 b, (2/5) mũ 5 nhân x = (2/5) mũ 7 c, 343/125 = (7/5) mũ x d, (-1/3) nhân x = 1/243
1) 1/3 - 5/6 + 3/2 2) 2/13 - ( 15/13 +4 - 0,5 ) 3) -( 1/9 +7/5 - 3/11) + ( -2/5 + 17/9 - 8/11 ) 4) 5,75 - 3,25 +5 5/6
Tính
a) 5/2 -3,4 (12) -4/3 +1/3 .[ 1/2+0,5 -7/2]
b) [ 0,(5) .0(2) ] : [ 10/3 : 33/25 ] - [ 2/5 .4/3 ] : 4/3
a)\(0,5+\dfrac{1}{3}+0,4+\dfrac{5}{7}-\dfrac{1}{6}-\dfrac{4}{35}\)
b)\(\left(3-\dfrac{1}{4}+\dfrac{2}{3}\right)-\left(5+\dfrac{1}{3}-\dfrac{6}{5}\right)-\left(-6-\dfrac{7}{4}+\dfrac{3}{2}\right)\)
c)\(\dfrac{1}{3}-\dfrac{3}{4}-\left(-\dfrac{3}{5}\right)+\dfrac{1}{64}-\dfrac{2}{9}-\dfrac{1}{36}+\dfrac{1}{15}\)
3 , 5 +0,5 -1 ,4 +7, 2 phần -6 , 5 +1 , 6 -13 ,5 + 0,5
1. Tính
a) (5/4)^3 . ( 4/5)^7
b) (1/3)4 . (-9/2)^6
c) 4^2 . (0.2)^3
d) (0,5)^4 . (-2)^8
e) (2/3)^3 . (8/27)^3
f) (9/10)^6 . (27/-20)^6
bài 1: tính
a) (1-4/5+3/10).(-2/3)
b) 7/9-7/13-7/151-7/8
5/9-5/13-5/151-5/8
c) 99992/33332+(0,5)4.(-2)4-9
Bt: a) 12.(-2/3) mũ 2 + 4/3 b) (3/2) mũ 2 -[ 0,5 : 2 - căn 81.(-1/2) mũ 2] c) (-3/4 + 2/3): 5/11 + (-1/4 + 1/3) d) -1 mũ 3 phần 15 + (-2/3) mũ 2: 2 2/3- |-5/6| e) 3 mũ 7 nhân 8 mũ 6 phần 6 mũ 6 nhân âm hai mũ mười hai