Question

Как решить 17х-х+5х-19=170

Answer 1

17x-x+5x-19=170
21x=170+19
21x=189
x=189/21
x=9

Answer 2

$17x - x + 5x - 19 = 170 \\ 16x + 5x - 19 = 170 \\ 21x = 170 + 19 \\ 21x = 189 \\ x = \frac{189}{21} \\ x = 9$