Tìm x:
A. 34 + (9 - 21)= 3417 - (x + 3417)
B. (15 - x) + (x - 12)= 7 - (-8 - x)
Tính
A, 34+(9-21)=3417-(x+3417)
B, (15-x)+(x-21)=7-(-8+x)
A, 34+(9-21)=3417-(x+3417)
34 + (-12) = 3417 - x - 3417
22 = ( 3417 - 3417 ) - x
22 = 0 - x
x = 0 - 22
x = -22
Vậy: x = - 22
B, (15-x)+(x-21)=7-(-8+x)
15 - x + x - 21 = 7 + 8 - x
-x + x = 7 + 8 - x - 15 + 21
0 = 15 - x - 15 + 21
0 = ( 15 - 15 ) - x + 21
0 = 0 - x + 21
-x = 0 - 0 - 21
- x = -21
x = 21
Vậy : x = 21
34 + ( 9-21) = 3417 - ( x + 3417)
34+(9-21)=3417-(x+3417)
34+(-12)=3417-3417+x
22=0+x
22=x
Vậy x=22
34+(9-21)=3417-(x+3417)
34+(-12)=3417-(x+3417)
22 =3417-(x+3417)
3417-22=x+3417
3395 =x+3417
3395-3417=x
x=-22
34+(9-21)=3417-(x+3417)
x-{55-[49+(-28-x)]}=13-{47[25-(32-x)]}
B)x-55+49+(-28-x)=13-47-25+(32-x)-34=-27-x=>x=34-27=7
TICH NHA LAN ANH !!!!( k chep de bai dau !!! )
tìm x \(\in\)Z biết
a) 34+(9-21)=3417-(x+341)
b)(15-x)+(x-12)=7-(-8+x
c) x-{55-[49+(-28-x)]}=13-{47+[25-(32-x)]}
d) -7+lx+4l=-3
e) lx-10l-(-12)=4
34 + (9-21)=3417-(x+341)
22 = 3417-(x+341)
3417-(x+341)=22
x+341=3417-22
x+341=3395
x=3395-341 ; x =3054
Xin lỗi Quảng Bùi Quỳnh Trang, tớ lỡ bấm vào sai rồi
I'm sorry
lx-10l-(-12)=4
=lx-10l+12=4
=x-10 =4-12
=lx-10l =-8
cha ! tiep theo minh tac ti rui .Phan truoc khong biet dung khong
34 + (9 -21) = 3417 - ( x +3417)
34 + ( 9 - 21 ) = 3417 - ( x + 3417 )
34 + ( -12 ) = 3417 - x - 3417
46 = x
=> x = 46
34 + ( 9 - 21 ) = 3417 - ( x + 3417 )
34 + ( -12 ) = 3417 - x - 3417
46 = x
=> x = 46
Tìm x thuộc Z biết :
A) 34+(9-21)=3417-(x+3417) B) x-(55-(49+(-28-x)))=13-(47+-25-32-x))
C)|x-1|-x+1=0 D) |2-x|+2=x
Giải ra giup minh nha !!!! MINH TICH CHO !!!!!
A) 34 + ( 9 - 21 ) = 3417 - (0 + 3417)
B) 9 - ( 55 - ( 49 + (-28 - 5 ))) = 13 -( 47 + -25 - 32 - 8 ))
C) |-1 - 1| - 1 + 1 = 0
D) |2 - 2| + 2 = 2
Tìm x thuộc Z, biết:
a. 1 + \(\left\{-2-[-3+\left(-4+\left|x\right|\right)]\right\}=1-2+[\left(-3-4\right)]\)
b. 34 + (9 - 21) = 3417 - (x + 3417)
c. x - \(\left\{55-[49+\left(-28-x\right)]\right\}=13-\left\{47+[25-\left(32-x\right)]\right\}\)
d. (15 - x) + (x - 12) = 7 - (-8 + x)
e. - 7 + \(\left|x-4\right|\) = - 3
f. 13 - \(|\)x + 5\(|\) = 13
g. \(|\)x + 1\(|\) > 2
h. \(|\)x + 2\(|\) ≤ 5
i. \(|\)x - 10\(|\) - (-12) = 4
a)(x+12).(x-7)=0. b) 2x+3x=-150. C)-24+7x=3417. E)5.(x-2)-3x=-4
a)trường hợp 1:x+12=0=>x=-12
trường hợp 2:x-7=0=>x=7
b)(2+3)x=-150=>5x=-150=>x=-30
b) x−15−[(27+x)−(x−13)]=−1
Bài 3. Tìm số nguyên x , biết: a) 43+(9−21)=317−(x−317)
b) (15−x)+(x−12)=7−(−5+x)