X x 124 + X x 877 - X = 125000
tìm x:
X x 124 + X x 877 - X = 125000
x*(124+877-1)=125000
x*1000=125000
x=125000/1000=125
đáp án đó bạn:)
tim x ( 845 x 877 ) x + 538 = 3498 bao nhieu
Tìm x, biết:
a) 467 + x = 877 - 162
b) x – 214 = 61 + 345
c) x : 5 = 10 × 2
d) x × 4 = 30 – 10
a) 467 + x = 877 – 162
467 + x = 715
x = 715 – 467
x = 248
b) x – 214 = 61 + 345
x – 214 = 406
x = 406 + 214
x = 620
c) x : 5 = 10 × 2
x : 5 = 20
x = 20 × 5
x = 100
d) x × 4 = 30 – 10
x × 4 = 20
x = 20 : 4
x = 5
Tìm x
a) x:2= 14 b) x+ 56=877
x-28-124\2011+x-124-2011\28+x-2011-28\124=3
(26+x)+124-(124-x)với x=2
(26 + x) + 124 - (124 - x)
= 26 + x + 124 - 124 + x
= 2x + 26
Với x = 2 ta có:
2.2 + 26 = 30
A = (26 + \(x\)) + 124 - (124 - \(x\))
Thay \(x\) = 2 vào A ta có:
A = (26 + 2) + 124 - (124 - 2)
A = 28 + 124 - 124 + 2
A = (28 + 2) + (124 - 124)
A = 30 + 0
A = 30
tính nhanh : a 124 x 52 - 124 x 42
b 0,8 x 23,6 x 3 - 4,8 x 1,8
124 x 52 - 124 x 42
=124x(52-42)
=124x10
=1240
123 + 877
1000 x 1
0 + 1
123 + 877= 1000
1000 x 1=1000
0 + 1 = 1
123 + 877 = 1000
1000 x 1 = 1000
0 + 1 = 1
hi
x-28-124/2011+x-124-2011/28+x-2011-28/124=3