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61 . 34 = 1920 + 2x
2074 = 1920 + 2x
2x = 2074 - 1920
x = 154 / 2
x = 77 (C)
32 + 2
1920 + 2x = 61
34
1920 + 2x = 61 . 34
1920 + 2x = 2074
2x = 2074 - 1920
2x = 154
x = 154/2
x = 77
jawaban ( c )