a) \(\left(x+13\right):5=12\)
\(\Rightarrow x+13=12\cdot5\)
\(\Rightarrow x+13=60\)
\(\Rightarrow x=60-13\)
\(\Rightarrow x=47\)
b) \(23\cdot\left(42-x\right)=23\)
\(\Rightarrow42-x=23:23\)
\(\Rightarrow42-x=1\)
\(\Rightarrow x=42-1\)
\(\Rightarrow x=41\)
X-(57-(42+(-23-x)=13-47+25-23-x
a)x-15=23+12
b)800:(x-12)=10
c)12.x+120=480
d)(-5).x3-600=25
e)2x+2+2x+1+4.2x=160
cảm ơn nhiều
Tìm x
a) x - 3/5 = 13
b)x/6 = 5/7+23/-42
c)-7/8 - x = 5/12 = -1/4
d0 x+ 11/12 = 2/5
X-{57-[42+(-23-x)]}=13-{47+[25-(32-x)]}
x - { 57 - [ 42 + ( -23 - x ) ]} = 13 - { 47 + [25 - ( 32 - x ) ] }. Tìm x
Câu 1 Chọn ý ko đúng trong các câu sau A. 15 23 12B. 21 13 33C.16 25 3D. 13 17
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 )]}
d , -7 + | x - 4 | = -3
e , 13 - | x + 5 | = 13
g , | x - 10 | - ( -12 ) = 4
h , | x + 2 | < 5
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)]}
Tim x
a, ( - 14 - x ) + 13 = 5
b, ( 11 + x ) - ( - 11 - 9 ) = 32
c, 5 - ( x - 8 ) + ( - 21 ) = 42
d, - [ 4 - 15 ] - ( - 4 - x = - 45
e, - 23 - ( 10 - x ) = - 50
