450 - (x : 7 + 8) . 2 - 16 = 24
(x : 7 + 8) . 2 = 450 - 24 - 16
(x : 7 + 8) . 2 = 410
x : 7 + 8 = 410 : 2
x : 7 + 8 = 205
x : 7 = 205 - 8
x : 7 = 197
x = 197 . 7
x = 1379
450 - (x : 7 + 8) . 2 - 16 = 24
(x : 7 + 8) . 2 = 450 - 24 - 16
(x : 7 + 8) . 2 = 410
x : 7 + 8 = 410 : 2
x : 7 + 8 = 205
x : 7 = 205 - 8
x : 7 = 197
x = 197 . 7
x = 1379
tim x ,a,x+1/2:(-3/4)=-5/4
b,1-(5 3/8 +x-7 5/24):16 2/3=0
1. Tính ( Phân số )
1) -5/24+16/27+0,75
2)-4/12+6/7+8/24
3)9/18+-7/12+-16/-32
4)5/-8+14/25+-6/10
2. Tìm x , biết :
1) 1/3 + 1/33 < x/210 < -4/-7 + 3/5 + -2/3 (x thuộc Z )
2) 5/3 + -14/3 < x < 1/5 +18/10 ( x thuộc Z )
(3/8+x-7 5/24):16 2/3
4,85-(3 1/8+1,105)<x<9,1-(6,85-2 3/4) x thuộc z
đebài:tìm x
bài 1 :tìm x
a,245-5.(16+x)=140
b,(x-1954).5=50
c,30.(60-x)=30
d,[(250-25):15]:x=(450-60):130
e,x:[(1800+600)]=560:(315-35)
f,x.(x+1)=2+4+6+8+10+.......................+2500
x+5.2-(32+16.3;16-15)=0
2448;[119-(x-6)=24
20-[7.(x-3)+4]=2
x;[(1800+600);30]=560;(315-35)
[(1250-25);15];x=(450-60);130
tìm x
f)1/4+1/3:3x=-5
h)1-(5/3/8+x-7/5/24):(-16/2/3)=0
1.tính
a; 41 x 36 + 59 x 90 + 41 x 84 + 59 x 30
b; 4 x 51 x 7 + 2 x 86 x 7 + 12 x 2 x7
c; 1727 + [ 6993 : 111 + ( 148 - 95 ) x 4 - 2 ]
d; 600 : { 450 : [ 450 - ( 4 x 125 - 8 x 25 ) ] }
e; ( 28 x 9 -190 ) x 25 -2790 : 45
g; ( 527 + 291 - 518) : 5
2. tìm x
[ 3 ( x + 2 ) : 7 ] . 4 = 120
giúp mình với
Cho biểu thức:\(A=\left(9\frac{3}{4}:5,2+x.2\frac{7}{24}\right):1\frac{9}{16}\)
Tìm x biết A=6