×+(-5)=4,-9+×=8,7+(-×)=3,-×+(-3)=5 tentukan pengganti x,agar kalimat mamtematika berikut benar

Jawab:

1. X + (-5) = 4

  X = 4 + 5

  X = 9

2. -9 + X = 8

    X = 8 + 9

    X = 17

3. 7 + (-X) = 3

  -X = -4

   X = 4

4. -X + (-3) = 5

   -X = 8

    X = -8