Jawaban:
x=3
Penjelasan dengan langkah-langkah:
3x = -4x + 21
3x + 4x - 21 = 0
7x - 21 = 0
7x = 21
x = 3
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Jawaban:
x=3
Penjelasan dengan langkah-langkah:
3x = -4x + 21
3x + 4x - 21 = 0
7x - 21 = 0
7x = 21
x = 3