х+0,65х+(-2,75)+(-0,65х)-х=х+0,65х-2,75-0,65х-х=-2,75
x+5=17-x
x+5+x=17
2x+5=17
2x=17-5
2x=12
x=12/2
x=6
х+0,65х+(-2,75)+(-0,65х)-х=х+0,65х-2,75-0,65х-х=-2,75
x+5=17-x
x+5+x=17
2x+5=17
2x=17-5
2x=12
x=12/2
x=6