Question

ex 5 va rog azi,e urgent am nevoie urgent

Answer 1

ax-2bx+cx = 32
a-b = -9 - - > a = - 9+b
c-b = - 7 - - > c = - 7+b

x(a-2b+c) = 32
x(-9+b-2b-7+b) = 32
x(-16) = 32
-16x = 32
x = - 2.

verificare : -2a+4b-2c = 32
-2(-9+b)+4b-2(-7+b) = 32
18-2b+4b+14-2b = 32
32 = 32.