-7(0,3х-8)+3(0,4х+5)=8
-2,1х+56 + 1,2х +15 =8
-0,9х = 8-56-15
-0,9х = -63
х= - 63 : (-0,9)
х= 630 : 9
х= 70
-7(0,3х-8)+3(0,4х+5)=8
-2,1х+56 + 1,2х +15 =8
-0,9х = 8-56-15
-0,9х = -63
х= - 63 : (-0,9)
х= 630 : 9
х= 70
-2,1x + 1,2x= 8 - 15 - 56
-0,9x = - 63 (: -0,9)
x= 70
:)