tìm x biết
9-25=(7-x)-(25+7)
tìm x:
a, x-(17-x)=x-7
b, 9-25=(7-x)-25+7
a, x-(17-x)=x-7
x-17+x = x-7
(x+x) - 17 = x - 7
2x - 17 = x - 7
2x - x = -7 + 17
1x = 10
x = 10
vậy_____
b, 9-25 = (7-x)-25+7
-16 = 7-x - 25 + 7
-16 = 7-x - (25-7)
-16 = 7-x - 18
-16 + 18 = 7 - x
2 = 7- x
2 - 7 = x
-5 = x
vậy____
x - ( 17 - x ) = x - 7
x - 17 + x = x - 7
x + x - x = 17 - 7
x = 10
9 - 25 = ( 7 - x ) - 25 +7
-16 = 7 - x - 25 + 7
- 16 = 7 - 32 - x
- 16 = -25 - x
x = - 25 - ( - 16 )
x = -9
a, x-(17-x)=x-7
x-17+x = x-7
(x+x) - 17 = x - 7
2x - 17 = x - 7
2x - x = -7 + 17
1x = 10
x = 10
x=10
b, 9-25 = (7-x)-25+7
-16 = 7-x - 25 + 7
-16 = 7-x - (25-7)
-16 = 7-x - 18
-16 + 18 = 7 - x
2 = 7- x
2 - 7 = x
-5 = x
tìm x
(7-x)-(25+7)=-25
Trl :
Ko chắc
\(\left(7-x\right)-\left(25-7\right)=-25\)
\(\Rightarrow\left(7-x\right)-18=-25\)
\(\Rightarrow\left(7-x\right)=-25+18\)
\(\Rightarrow7-x=-7\)
\(\Rightarrow x=7-\left(-7\right)\)
\(\Rightarrow x=0\)
đúng rồi. thanks
(7-x)-(25+7)=-25
(7-x)-32 =-25
7-x =-25+32
7-x = +(32-25)
7-x = 7
x =7-7
x = 0
Vậy x = 0
Tìm số nguyên x biết: 9 – 25 = ( 7 – x) – (25 + 7)
9 – 25 = (7-x) – (25 + 7)
9 + (-25) = 7 – x – 25 – 7
-16 = 7 – x – 25 – 7
X = 7 – 7 – 25 + 16
x = -25 + 16
x = -9
Tìm số nguyên X
-9-25=(7-x)-(-25+7)
X-(17-x)=x-7
Trả lời:
\(a,\)\(-9-25=\left(7-x\right)-\left(-25+7\right)\)
\(\Leftrightarrow-34=7-x-\left(-18\right)\)
\(\Leftrightarrow-34=7-x+18\)
\(\Leftrightarrow-34=25-x\)
\(\Leftrightarrow x=59\)(Thỏa mãn \(x\inℤ\))
Vậy x = 59
\(b,\)\(x-\left(17-x\right)=x-7\)
\(\Leftrightarrow x-17+x=x-7\)
\(\Leftrightarrow2x-17=x-7\)
\(\Leftrightarrow x=10\)(Thỏa mãn\(x\inℤ\))
Vậy x = 10
Banh Bao Tong
9-25=(7-x)-(25+7)
tìm x
9 - 25 = ( 7 - x ) - ( 25 + 7 )
-16 = ( 7 - x ) - 32
-16 + 32 = 7-x
16 = 7 - x
x = 7 - 16
x = -9
nếu mk đúng k mk nha mn ủng hộ mk nhé kb đi
9-25=(7-x)-(25+7)
(-16)=( 7-x )-32
(-16) +32=7-x
16 = 7-x
7-16 =x
-9 = x
vậy x= -9
^_^
Tìm x thuộc Z:
9-25 = ( 7- x ) - ( 25 + 7 )
Ừ! Đúng là bằng -9 nhưng các bạn phải viết cả cách làm ra
Theo đầu bài ta có:
9 - 25 = ( 7 - x ) - ( 25 + 7 )
=> -16 = 7 - x - 32
=> -16 = -25 - x
=> x = ( -25 ) - ( -16 )
=> x = -9
tìm x biết
1) 9-25=(7-x)-(25+7)
2) (27-514) -(486-73)+x=7
3) 25+5+37-25+6-29-x=37
4) 14+(-12)+x =10-/-15/+ /-3/
1) 9-25=(7-x)-(25+7)
(7-x)-(25+7)=9-25
(7-x)-(25+7)=-16
(7-x)-32=-16
7-x=-16+32
7-x=16
x=7-16
x=-9
2) (27-514) -(486-73)+x=7
(27-514) -(486-73)+x=7
-487-413+x=7
-1011+x=7
x=7-(-1011)
x=7+1011
x=1018
3) 25+5+37-25+6-29-x=37
25+5+37-25+6-29-x=37
67-25+6-29-x=37
42+6-29-x=37
48-29-x=37
19-x=37
x=19-37
x=-18
4) 14+(-12)+x =10-/-15/+ /-3/
14+(-12)+x =10-15+3
14+(-12)+x =-5+3
14+(-12)+x =-2
2+x=-2
x=-2-2
x=-4
Tìm số nguyên x, biết :
a) 11 - (15 + 21) = x -(25 - 9)
b) 9 - 25 = (7 - x) - (25 + 7)
a,11-(15+21)=x-(25-9)
11-15-21=x-25+9
-x=-25+9-11+15+21
-x=9
x=-9
b,9-25=(7-x)-(25+7)
-16=7-x-32
x=7-32+16
x=-9
tìm x
25+4<x+25<25+7<x+25<4+25