2 z - (9z + 8) = (5 - 2 z) - 3 (3z - 4) + 15
Matematika
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Pertanyaan
2 z - (9z + 8) = (5 - 2 z) - 3 (3z - 4) + 15
1 Jawaban
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1. Jawaban tari333
2z - (9z + 8) = (5 - 2z) - 3(3z - 4) + 15
2z - 9z - 8 = 5 - 2z - 9z + 12 + 15
-7z - 8 = 5 + 12 + 15 - 2z - 9z
-7z - 8 = 32 - 11z
- 7z + 11z = 32 + 8
4z = 40
z = 40/4
z = 10