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7x - 3x = 15 + 9
4x = 24
x = 24 : 4 = 6
2x - 1 = 2(6) - 1
= 12 - 1
= 11
7x - 3x = 15 + 9
4x = 24
x = 24 :4
x = 6
Jadi 2x - 1 = 2.6 - 1 =12 -1 = 11
#maaf klo salah