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Kelas 7 MatematikaBab 3 - Bentuk Aljabar
2 (t + 4) = 4t - 12
2t + 8 = 4t - 12
2t - 4t = -12 - 8
-2t = -20
t = -20/-2
t = 10
2t+8=4t-12
-2t=-20
t=10