a.484+x=(-632)+(-548)
b.(-x)+(-62)+(-46)=-14
c.25+(x-5)=-415-(15-415)
Bài 2(2,5 điểm) Tìm số nguyên x biết:
a ) 3 - ( 17 - x ) = 289 - ( 36 + 289 )
b ) 25 + ( x-5 ) = - 415 - ( 15 - 415 )
c ) ( - x ) + ( - 62 ) + ( - 46 ) = - 14
d ) 484 + x = - 632 + ( - 548 )
e ) 17 - ( - x + ( - x - ( - x ) ) ) = -16
f ) x - (( - x + ( x + 3 ))) - (( x + 3 ) - ( x - 2 ) = 0
-x+(-32)+(-46)=-84
484+x=-632+(-548)
-x+(-32)+(-46)=-84
-x + ( -32 ) = -84 - ( - 46 )
-x + ( -32 ) = -38
-x = -38 - ( - 32 )
-x = -6
=> x = 6
484+x=-632+(-548)
484+x=-1180
x = -1180 - 484
x = -1664
-x+(-32)+(-46) = -84
-x + (-32) = -84 - (- 46)
-x + (-32) = -38
-x = -38 - (- 32)
-x = -6
=> x = 6
vậy____
tìm x
a, |x+3| -12 = |-5|
b, 25 - (x-5) = 415 x (15 - 415 )
a, | x + 3 | - 12 = | -5 |
x + 3 - 12 = 5
x + 3 = 5 + 12
x + 3 = 17
x = 17 - 3 = 14
b, 25 - ( x- 5 ) = 415 x ( 15 - 415 )
25 - ( x - 5 ) = 415 x ( - 400 )
25 - ( x - 5 ) = - 166000
x - 5 = 25 - ( - 166000)
x - 5 = 166025
x = 166025 + 5
x = 166030
CHÚC BẠN HỌC TỐT
a, 4524 - ( 864 -999) - ( 36 + 3999)
b, 25 - ( x + 5 ) = 415 - ( 15 - 415 )
c, 34 + ( 21 - x ) = ( 3747 - 30 ) - 3746
* Tính nhanh
tim so nguyen x, biet
a, 3-[17-x] = 289-[36+289]
b,25-[x+5]=-415-[15-415]
a)3-[17-x]=289-325
[17-x]=3-(289-325)
[17-x]=3-(-36)
[17-x]=39
x=17-39
x=-22
b)25-[x+5]=-415-[15-415]
25-[x+5]=-415+400
25-[x+5]=-15
[x+5]=25+15
[x+5]=40
x=40-5
x=35
484+x = -632 + (-548)
484+x = -632 + (-548)
484+x = -1180
x= -1180 - 484
x= -1664
484 + x = -632 + (-548)
484 + x = -1180
x = -1180 - 484
x = - 1664
484+x=-632+(-548)
484+x=-1180
x=-1180-484
x=-1664
25+(x-5)=-415-(15-415)
25+(x-5)=-415-(15-415)
\(\Leftrightarrow x+20=-15\)
hay x=-35
25 - (x + 5) = -415 - (15 - 415)
\(25-\left(x+5\right)=-15\)
\(x+5=40\)
\(=>x=35\)
25-(x+5)=-415-15+415
25-(x+5)=(-5)
X+5=25-(-5)
X+5=30
X=30-5
X=25
Vậy x=25