[tex]a) \\97 = 2x-5 / +5\\102 = 2x /:5\\51 = x\\x = 51\\\\b) \\43 = 7 + 9x /-7\\36 = 9x /:9\\4 = x\\x = 4\\\\c) \\17=11-12x /-11\\6 = -12x /:(-12)\\-\frac{6}{12} = x\\x = -\frac{1}{2} \\\\d) \\3 = \frac{x}{2} - 1 /+1\\4 = \frac{x}{2} /*2\\8 = x\\x = 8[/tex]
Odpowiedź:
a) -2x = -5 - 97 -2x = -102 x = 51
b) -9x = 7 - 43 -9 = -36 x = 4
c) 12x = 11 - 17 12x = -6 x = - 0,5
d) 6 = x - 2 -x = -2 -6 -x = -8 x = 8
