2(x+3)+5(x+1) 9(7+y)+8(6+y)4(3x+23)+7(6+5x)12(9+8y)+3(11+6y)

2(х+3)+5(х+1)= 2х+6+5х+5= 7х+11= 7х= -11 х= -11/7= -1 4/7 9(7+у)+8(6+у)= 63+9у+48+8у= 111+17у= 17у= -111 у= -111/17= 6 9/17 4(3х+23)+7(6+5х)= 12х+92+42+35х= 47х+117= 47х= -117 х= -117/47= -2 23/47 12(9+8у)+3(11+6у)= 108+96у+33+18у= 114у+141= 114у= -141 у= -141/114= -1 27/114