Реши уравнения) 2(11-5)-17х=55 5(8х+3)-12=83 7(2х+9)+3х=114 3(4х+13)-25=74

5(8х+3)-12=83 40x+15-12=83 40x=83-15+12 40x=80 x=80:40 x=2 ======== 7(2х+9)+3х=114 14x+63+3x=114 17x=114-63 17x=51 x=51:17 x=3 ======== 3(4х+13)-25=74 12x+39-25=74 12x=74-39++25 12x=60 x=60:12 x=5 ============= 2(11x-5)-17х=55 22x-10-17x=55 5x-10=55 5x=55+10 5x=65 x=65:5 x=13