1) -6*(3x+4y-8) = -18x-24y+48
2) -(y-7,4+x) = -y+7,4-x
3) (-2,6+х+у) - (х-у-2,6) = -2,6+x+y-x+y+2,6 = 2y
1) -6(3х+4у-8) =-18х-24у+48
2) -(у-7,4+х) =-у+7,4-х
3) (-2,6+х+у)-(х-у-2,6)=-2,6+х+у-х+у+2,6=2у.
1) -6*(3x+4y-8) = -18x-24y+48
2) -(y-7,4+x) = -y+7,4-x
3) (-2,6+х+у) - (х-у-2,6) = -2,6+x+y-x+y+2,6 = 2y
1) -6(3х+4у-8) =-18х-24у+48
2) -(у-7,4+х) =-у+7,4-х
3) (-2,6+х+у)-(х-у-2,6)=-2,6+х+у-х+у+2,6=2у.