Ответ:\(3x+(2y-x+4)=2x+2y+4\).\(5a-(3b-2a+1)=7a-3b-1\).\(-4h-(-2c+h-3)=-5h+2c+3\).\((-7m+5)-(-4m+2)=-3m+3\).\(4m+(3n-2m+5)=2m+3n+5\).\(7a-(4b-3a+2)=10a-4b-2\).\(-5x-(-3y+x-4)=-6x+3y+4\).\((2k-9)-(-5k+1)=7k-10\).