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=> 2 pkt 4x+1 = 2 pkt 3(x+5)
=> 4x + 1 = 3x + 15
=> 4x - 3x = 15 - 1
=> x = 14
c) 4 pkt 2x+4 = 2 pkt 2x +8
=> 2 pkt 2 (2x+4) = 2 pkt 2x +8
=> 4x + 8 = 2x + 8
=> 4x - 2x = 8 - 8
=> 2x = 0
=> x =0
nb : yg digaris bawahi itu dicoret