[tex]\displaystyle 1)18+4x=11-3x\\4x+3x=11-18\\7x=-7\\x=-1\\\\2)12x-7(4x-6)=10\\12x-28x+42=10\\-16x+42=10\\-16x=10-42\\-16x=-32\\x=2\\\\3)\frac{x-1}{2}-\frac{2x}{3}=\frac{x+3}{4}\\ \\6(x-1)-8x=3(x+3)\\ 6x-6-8x=3x+9\\ -2x-6=3x+9\\-2x-3x=9+6\\-5x=15\\x=-3[/tex]
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[tex]\displaystyle 1)18+4x=11-3x\\4x+3x=11-18\\7x=-7\\x=-1\\\\2)12x-7(4x-6)=10\\12x-28x+42=10\\-16x+42=10\\-16x=10-42\\-16x=-32\\x=2\\\\3)\frac{x-1}{2}-\frac{2x}{3}=\frac{x+3}{4}\\ \\6(x-1)-8x=3(x+3)\\ 6x-6-8x=3x+9\\ -2x-6=3x+9\\-2x-3x=9+6\\-5x=15\\x=-3[/tex]