Q. Matematika, +35, 2022, 2022, ________________________________, 12 - X + 5 + 70 = 17 + 90

Q. Matematika
+35
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12 - x + 5 + 70 = 17 + 90

 

♧ 12 - x + 5 + 70 = 17 + 90

17 + 70 - x = 107

87 - x = 107

- x = 107 - 87

- x = 20

x = 20/-1

x = -20

Pemuktian:

♧ 12 - x + 5 + 70 = 17 + 90

12 - (-20) + 5 + 70 = 107

32 + 5 + 70 = 107

37 + 70 = 107

107 = 107