Question

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a) x-3=-8
b) 2x+4 =-20 - x
c) - 4x = +36
d) x:(-3)=-1
e) 18:(-x)= -9​

Answer 1

a)$x-3 = -8\\x = -5$

b) $2x+4 = -20 - x\\3x = -24\\x = -8$

c) $-4x = 36 \\ x = \frac{36}{-4} = -9$

d) $\frac{x}{-3} = -1 \\ x = (-1)\cdot (-3) = 3$

e) $\frac{18}{-x} = -9\\ 18 = (-9)\cdot (-x) = 9x\\ x = \frac{18}{9} = 2$

Answer 2

Răspuns:

Explicație pas cu pas:

a)  x - 3 = - 8

    x = - 8 + 3

    x = - 5

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b)   2 x + 4 = - 20 - x

      2 x + x = - 20 - 4

      3 x = - 24

       x = ( - 24 ) : 3

       x = - 8

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c)   - 4 x = 36

        x = 36 : ( - 4 )

        x = - 9

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d)    x : ( - 3 ) = - 1

      x = ( - 1 ) × ( - 3 )

      x = 3

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e)    18 : ( - x ) = - 9

       - x = 18 : ( - 9 )

       - x = - 2

         x = 2

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