43 + (9 – 21) = 317 – (x + 317)
Những câu hỏi liên quan
43+(9-21)=317-(x+317)
\(43+\left(9-21\right)=317-\left(x+317\right)\)
\(\Leftrightarrow\) \(43+9-21=317-x-317\)
\(\Leftrightarrow\) \(31=-x\) \(\Leftrightarrow x=-31\)
Đúng 0
Bình luận (0)
43+(9−21)=317−(x+317)43+(9−21)=317−(x+317)
⇔⇔ 43+9−21=317−x−31743+9−21=317−x−317
⇔⇔ 31=−x31=−x ⇔x=−31
Đúng 0
Bình luận (0)
43 + (9-21)=317-(x+ 317 )
\(43+\left(9-21\right)=317-\left(x+317\right)\)
\(43+9-21=317-x-317\)
\(31=317-317-x\)
\(31=0-x\)
\(\Rightarrow x+0=-31\)
\(x=\left(-31\right)-0\)
\(x=-31\)
Đúng 0
Bình luận (0)
\(43+\left(9-21\right)=317-\left(x+317\right)\)
\(43+\left(-12\right)=317+x-317\)
\(31=317+x+\left(-317\right)\)
\(31=317+\left(-317\right)+x\)
\(31=0+x\)
\(31=x\)
\(\Leftrightarrow x=31\)
Vậy \(x=31\) là giá trị cần tìm
Đúng 0
Bình luận (0)
\(43\) \(+\) \(\left(9-21\right)\) \(=\) \(317\) \(-\) \(\left(x+317\right)\)
\(43\) \(+\) \(\left(9-21\right)\) \(=\) \(317\) \(-\) \(x-317\)
\(43+\left(-12\right)\) \(=\) \(317-317-x\)
\(31\) \(=\) \(0-x\)
\(0+x=31\)
\(x\) \(=\) \(31-0\)
\(x\) \(=\) \(31\)
Đúng 0
Bình luận (0)
tìm x thuộc z biết
a, 43+(9-21)= 317-(x+317)
b, (15-x)+(x-12)=7-(-5+x)
\(43+\left(9-21\right)=317\left(x+317\right)\)
\(\Rightarrow317-\left(x+317\right)=43+\left(9-21\right)\)
\(\Rightarrow317-\left(x+317\right)=43+\left(-12\right)\)
\(\Rightarrow317-\left(x+317\right)=31\)
\(\Rightarrow x+317=317-31\)
\(\Rightarrow x+317=286\)
\(\Rightarrow x=286-317\)
\(\Rightarrow x=-31\)
Vay x = -31
\(b.\left(15-x\right)+\left(x-12\right)=7-\left(-5+x\right)\)
\(\Rightarrow15-x+x-12=7+5+x\)
\(\Rightarrow15-12=12-x\)
\(\Rightarrow3=12-x\)
\(\Rightarrow12-x=3\)
\(\Rightarrow x=12-3\)
\(\Rightarrow x=9\)
Vay x = 9
....
a) 43+(9-21) = 317-(x+317)
43+(-12) = 317-(x+317)
317-(x+317) = 31
x+317 = 317-31=286
x = 286-317=(-31)
Tạm thời câu b mình chưa nghĩ ra nha.
a) \(43+\left(9-21\right)=317-\left(x+317\right)\)
\(43+\left(-12\right)=317-\left(x+317\right)\)
\(317-\left(x+317\right)=31\)
\(x+317=317-31=286\)
\(x=286-317=-31\)
b) \(\left(15-x\right)+\left(x-12\right)=7-\left(-5+x\right)\)
\(15-x+x-12=7+5-x\)
\(7+5-x=\left(15-12\right)+\left(-x+x\right)\)
\(7+5-x=3+0=3\)
\(5-x=3-7=-4\)
\(x=5-\left(-4\right)=5+4=9\)
Xem thêm câu trả lời
a.(3x-24).7mũ3=2.47
b.43+(9-21)=317-(x+317)
c.(x+1)+(x+2)+(x+3)+...+(x+100)=7450
giúp mik với mai mik phải nộp bài r:(
6 tháng 12 2021 lúc 19:11
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)
TÌm x
A.-(-3-x+8)-(-3+5)=|5-8|
B.43+(9-21)=317-(x+317)
C.3(x-2)-2(x-4)=-12-2
Tìm x
\(\text{a.-(-3-x+8)-(-3+5)=|5-8| }\)
\(3+x-8+3-5=\)\(\left|-3\right|\)
\(3+x-8+3-5=\)\(3\)
\(x=\)\(\text{3+5-3+8-3}\)
\(\text{x=10}\)
B.\(\text{43+(9-21)=317-(x+317)}\)
\(43+9-21\)\(=317-x-317\)
\(50-21=\left(317-317\right)\)\(-x\)
\(29=0-x\)
\(29=-x\)
\(\Rightarrow x=-29\)
c,3(x-2)-2(x-4)=-12-2
3x -6 -2x -8= -12
(3x-2x) - (6+8) =-14
x-14=-14
x=-14+14
x=0
Tìm số nguyên x biết:
a/ 43+(9-21)=317-(x+317)
b/(15-x)+(x-12)=7(-5+x)
c/x-{57-[42+(-23-x)]}=13-{47+25-(32-x)]}
a 43+(9-21)=317-(x-317)
43+(-10)=317-x-317
31=(317-317)-x
31=-x
x=-31
h minh nha
Đúng 0
Bình luận (0)
Tìm x
a, 317- ( x + 317 ) + 43 + ( 9 - 21 )
b, ( 15 - x ) + ( x - 12 ) = 7 - ( 52 + x )
c, 2 . ( x - 5 ) - 3 . ( x - 4 ) = -6 - 45
Dấu ' . ' là dấu nhân nhé các bạn
a. x + (-45) = (-62 ) + 17
b. x + 29 = /-43/ + (-43)
c. 43 + (9 - 21) = 317 - ( x +317)
d. (15 - x ) + ( x - 12 ) = 7 - ( -5 + x )
e. x - { 57 - [ 42 + ( -23 - x ) ] } = 13 - { 47 + [ 25 - ( 32 - x ) ] }
f. / x / + /-4/ = 7
a,x+(-45)=(-62)+17
<=>x=(-62)+17+45
<=>x=0
b,x+29=\(|-43|\)-+(-43)
<=>x=43-43-29
<=>x=-29
c,43+(9-21)=317-(x+317)
<=>31=317-x-317
<=>31=-x
<=>-31=x
d, (15-x)+(x-12)=7-(-5-x)
<=>15-x+x-12=7+5+x
<=>3=12+x
<=>-9=x
e, x-{57-[42+(-23-x)]}=13-{47+[25-(32-x)]}
<=>x-57+42-23-x=13-47-25+32-x
<=>76=-27-x
<=>103=-x
<=>-103=x
f,\(|x|+|-4|=7\)
<=>\(|x|\)+4=7
<=>\(|x|\)=3
<=>x=3 hoặc x=-3
Đúng 0
Bình luận (0)
a. x + (-45) = (-62 ) + 17
b. x + 29 = /-43/ + (-43)
c. 43 + (9 - 21) = 317 - ( x +317)
d. (15 - x ) + ( x - 12 ) = 7 - ( -5 + x )
e. x - { 57 - [ 42 + ( -23 - x ) ] } = 13 - { 47 + [ 25 - ( 32 - x ) ] }