tìm x : X x 14 - 13 x 2 = 112 : 76
X x 14-13 x 2= 112:76
x.14-13.2=112:76
x.14-26=36
x.14=36+26
x.14=62
x=62/14=31/7
vậy x=31/7
Tìm x biết:
a ) | x | = 1 5 + 3 4 ; b ) | x − 5 | = − − 5 3 + 1 4 ;
c ) x − 1 4 = 3 2 + 1 3 − 7 6 ; d ) x − 4 3 = 1 6 + 5 3 − 1 2 + 7 12 .
a ) x = 19 20 x = 19 20 b ) x = 83 12 x = − 37 12
c ) x = 31 12 x = − 25 12 d ) x = 13 4 x = − 7 12
Tìm x, biết:
a) x − 1 4 = 3 2 + 1 3 − 7 6
b) x − 4 3 = 1 6 + 5 3 − 1 2 + 7 12
a) x = 31 12 x = − 25 12
b) x = 13 4 x = − 7 12
Tìm x biết :
A) x + 13 = 32 - 76
B) (-15) + x = (-14) - (-57)
\(x+13=32-76\)
\(\Leftrightarrow x+13=-44\)
\(\Leftrightarrow x=-44-13\)
\(\Leftrightarrow x=-57\)
\(-15+x=-14-\left(-57\right)\)
\(\Leftrightarrow-15+x=-14+57\)
\(\Leftrightarrow-15+x=43\)
\(\Leftrightarrow x=43+15=58\)
A) x + 13 = 32 - 76
x + 13= -44
x = (-44) - 13
x = -57
Vậy x = -57
B) (-15) + x = (-14) - (-57)
(-15) + x = (-14) + 57
(-15) + x = 43
x = 43 + (-15)
x = 43 - 15
x = 28
Vậy x = 18
=))
tìm x
71-(33+x)=76
(x+73)-26=76
45-(x+9)=6
x-73-(-14)=45
(x-7)-25=-13
(x-4)-120= -100
a) 71-(33+x) = 76
71-33-x=76
38-x=76
x = -38
các bài cn lại bn lm tương tự nha!
71 - ( 33 + x ) = 76
33 + x = -5
x = -38
Vậy .....
( x + 73 ) - 26 = 76
x + 73 = 102
x = 29
Vậy ....
Tìm x, biet
a)x+13=32-76
b)(-15)+x=(-14)-(-57)
a) x+13 = 32 -76
x+13 = -44
x = -44 -13
x = -57
=> x = -57
b) (-15)+x = (-14)-(-57)
(-15) +x = 43
x = 43 -(-15)
x =58
=> x = 58
tic nhé
a) x+13=32-76
x+13=-44
x=(-44)-13
x=-57
b)(-15)+x=(-14)-(-57)
(-15)+x=43
x=43-(-15)
x=58
Tìm x ∈ ℤ ,biết:
a ) 3 8 + − 11 8 < x < 22 9 + 5 18 ; b ) − 7 8 + 5 6 < x 24 < 2 3 + − 5 8 ; c ) 1 3 + 1 4 + 1 12 ≤ x ≤ 7 10 + 27 6 ; d ) − 31 14 + 115 161 + 111 74 < x ≤ 6 36 + 9 27 + 48 96
a) – 1 < x < 49 18 => x ∈ {0;1;2}
b) − 1 24 < x 24 < 1 14 => x = 0
c) 2 3 ≤ x ≤ 26 5 => x ∈ {1;2;3;4;5}
d) 0 < x ≤ 1 => x = 1
tìm x
112+2.(x-14)=121
\(112+2.\left(x-14\right)=121\)
\(\Rightarrow2.\left(x-14\right)=121-112\)
\(\Rightarrow2.\left(x-14\right)=9\)
\(\Rightarrow x-14=9:2\)
\(\Rightarrow x-14=4,5\)
\(\Rightarrow x=4,5+14\)
\(\Rightarrow x=18,5\)
Vậy \(x=18,5\)
112 + 2 . ( x - 14 ) = 121
2 . ( x - 14 ) = 121 - 112
2 . ( x - 14 ) = 9
( x - 14 ) = 9 : 2
x - 14 = 4,5
x = 4,5 + 14
x = 18,5
Tìm \(x\), biết :
a) \(x+13=32-76\)
b) \(\left(-15\right)+x=\left(-14\right)-\left(-57\right)\)
a) x + 13 = 32 - 76
=> x + 13 = -44
=> x = (-44) - 13
=> x = -57
b) ( -15) + x = ( -14 ) - ( -57 )
=> (-15) + x = (-14) + 57
=> (-15) + x = 43
=> x = 43 - (-15)
=> x = 43 + 15
=> x = 58
Tìm x
a) x+13=32-76
x+13= -44
x= -44-13
x= -57
b) (-15)+x=(-14)-(-57)
(-15)+x= (-14)+57
(-15)+x= 43
x= 43-(-15)
x=43+15
x=58
a) x + 13 = 32 - 76
x + 13 = 32 + (-76)
x + 13 = -44
x = (-44) + (-13)
x = -57
b) (-15) + x = (-14) - (-57)
(-15) + x = (-14) + 57
(-15) + x = 43
x = 43 + 15
x = 58