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x = 7-5
x = 2
b) x-3 = 0
x = 0+3
x = 3
c) -x+2 = 5
-x = 5-2
-x = 3
x = -3
d) -x-5 = -6
-x = -6+5
-x = -1
x = 1
Pindahkan variabel kekiri dan angka kekanan
jangan lupa , setelah dipindahkan , tanda operasi di ubah jadi berlawanan
a. x + 5 = 7
x = 7 - 5
x = 2
b. x + (-3) = 0
tanda minus ketemu dengan tanda positif menghasilkan MINUS
x - 3 = 0
x = 3
c. - x + 2 = 5
-x = 5 - 2
-x = 3
kalikan dengan minus -1
x = -3
d. -x + (-5) = -6
-x - 5 = -6
-x = -6 + 5
-x = -1
x = 1