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x-7 = 3x-1 -( x-7 ) = 3x-1
x-3x = -1+7 atau -x+7 = 3x-1
-2x = 6 -x-3x = -1-7
x = 6/-2 -4x = -8
x = -3 x = -8/-4
x = 2
jadi himpunan penyelesaiannya { 2,-3}
maaf kalau salah,
jadi
(x - 7)^2 = (3x - 1)^2
x^2 - 14x + 49 = 9x^2 - 6x + 1
-8x^2 - 8x - 48 = 0 (bagi kedua ruas dengan -8)
x^2 + x + 6 =0
(x + 3)(x - 2) = 0
x = - 3 atau x = 2