11.3(y-5)+8=17 12. 5(x+2)=6(2x+7) 13. 5(x+3)=8(10-x) - вопрос №631491411358171252627135381014892523156 от dashasmirnova85 19.06.2021 18:29

Question

Алгебра: 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 !

dashasmirnova85 · Answer

3(y-5)+8=173y-15+8=173y=17+15-83y=24:3y=85(x+2)=6(2x+7)5x+10=12x+425x-12x=42-10-7x=32:(-7)x=-4 4/75(x+3)=8(10-x)5x+15=80-8x5x+8x=80-1513x=65:13x=58(9+2x)=5(2-3x)72+16x=10-15x16x+15x=10-7231x=-62:31x=-26(x-3)-10=2(x+2)6x-18-10=2x+46x-2x=4+284x=32:4x=85(x-1)+20=4(x-3)5x-5+20=4x-125x-4x=-12+5-20x=-2710y+2(7y-2)=5(4y+3)+3y10y+14y-4=20y+15+3y24y-20y-3y=15+4y=198(3z-2)-13z=5(12-3z)+7z24x-16-13z=60-15z+7z11z+15z-7z=60+1619z=76:19x=4...