1) поделим на 2 все уравнение, получим
1/2sinx+√3/2cosx=1/2
sin(x+π/3)=1/2
x+π/3=π/6+2πn x+π/3=5π/6+2πn
x=-π/6+2πn x=π/2+2πn
2)поделиπм на 2
√3/2sinx+1/2cosx=1/2
sin(x+π/6)=1/2
x+π/6=π/6+2πn x+π/6=5π/6+2πn
x=2πn x=2π/3+2πn
Y-2X=8
Y=8+2X
_______
1.5X+2*(8+2X)=32,5
1.5X+16+4X=32,5
5,5X=16,5
X=3
Y=8+2*3=14
5. 3(х-3)=19(х-19);
3х-9=19х-361;
16х=352;
х=22