October 2018 2 21 Report
Soal al jabar
1.(13a - 8b) + (12a+9b)
2.(15i + 14b + 13k) +(-30i-45j + 51k)
3.(3-17x + 35z)
4.(4x + 23y - 9)
5.(42n + 35m + 7)
6.10 ×(2y-10)
7(x+5) × (2x - 7)

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