\(x+13=32-76\)

\(\Leftrightarrow x+13=-44\)

\(\Leftrightarrow x=-44-13\)

\(\Leftrightarrow x=-57\)

\(-15+x=-14-\left(-57\right)\)

\(\Leftrightarrow-15+x=-14+57\)

\(\Leftrightarrow-15+x=43\)

\(\Leftrightarrow x=43+15=58\)

a, -15 + \(x\) = -14 - (-57)

    -15 + \(x\) = -14 + 57

              \(x\) = -14 + 57 + 15

              \(x\) =  58

b, (-14) + \(x\) - 7 = -10

               \(x\)      = -10 + 7 + 14

                \(x\)   = -3 + 14

                 \(x\)  = 11

1, -15 + \(x\) = -14 - (-57)

   -15 + \(x\)  = -14 + 57

             \(x\) = -14 + 57  + 15

             \(x\) = 43 + 15

             \(x\) = 58

2, (-14) + \(x\) - 7 = -10

    -14 + \(x\) - 7 = -10

     - 21 + \(x\)    = - 10

                \(x\)   = -10 + 21

                 \(x\) = 11

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=(-44)

x=-31

b)(-15)+x=43

x=43+15

x=58

c)8-(3-7)

=8+4

=12

d)(-5)-(9-12)

=(-5)+3

=-2

t tôi nha

1)

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

2)

a) 8 - ( 3 - 7 ) = 8 - ( -4 ) = 12

b) ( -5 ) - ( 9 - 12 ) = ( -5 ) - ( -3 ) = -2

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

a 43+(9-21)=317-(x-317)

43+(-10)=317-x-317

31=(317-317)-x

31=-x

x=-31

h minh nha

17x + 3. ( -16x – 37) = 2x + 43 - 4x

<=>17x-48x-111=-2x+43

<=>-29x=154

<=> \(x=-\frac{154}{29}\)

-3. (2x + 5) -16 < -4. (3 – 2x)

\(\Leftrightarrow-6x-31< -12+8x.\)

\(\Leftrightarrow-14x< 19\Rightarrow x< -\frac{19}{14}\)