11.3(y-5)+8=17 12. 5(x+2)=6(2x+7) 13. 5(x+3)=8(10-x) 14. 8(9+2x)=5(2-3x) 15. 6(x-3)-10=2(x+2) 16. 5(x-1)+20=4(x-3) 17. 10y+2(7y-2)=5(4y+3)+3y 18. 8(3z-2)-13z=5(12-3z)+7z Решите пожалуйста!!! срочно

3(y-5)+8=17 3y-15+8=17 3y=17+15-8 3y=24:3 y=8 5(x+2)=6(2x+7) 5x+10=12x+42 5x-12x=42-10 -7x=32:(-7) x=-4 4/7 5(x+3)=8(10-x) 5x+15=80-8x 5x+8x=80-15 13x=65:13 x=5 8(9+2x)=5(2-3x) 72+16x=10-15x 16x+15x=10-72 31x=-62:31 x=-2 6(x-3)-10=2(x+2) 6x-18-10=2x+4 6x-2x=4+28 4x=32:4 x=8 5(x-1)+20=4(x-3) 5x-5+20=4x-12 5x-4x=-12+5-20 x=-27 10y+2(7y-2)=5(4y+3)+3y 10y+14y-4=20y+15+3y 24y-20y-3y=15+4 y=19 8(3z-2)-13z=5(12-3z)+7z 24x-16-13z=60-15z+7z 11z+15z-7z=60+16 19z=76:19 x=4