tentukan himpunan penyelesaian dari. a.) x-5x+7=0 b.){x+3} {x-2}= 2{X-2}

a)
x – 5x + 7 = 0
x – 5x = –7
–4x = –7
x = 7/4
HP = {7/4}

b)
(x + 3) (x – 2) = 2(x – 2)
x² – 2x + 3x – 6 = 2x – 4
x² + x – 6 = 2x – 4
x² + x – 2x – 6 + 4 = 0
x² – x – 2 = 0
(x – 2) (x + 1) = 0
x = 2, x = –1
HP = {–1, 2}