9x - 7x = 2x = 4, x = 2
11x - 10x = x = 2
7x2 = 14
10x2 = 20
14 + 20 = 34
Jawaban C
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9x - 7x = 2x = 4, x = 2
11x - 10x = x = 2
7x2 = 14
10x2 = 20
14 + 20 = 34
Jawaban C
semoga membantu