1)9(z-73)-8(z+375)=238-11(z-7)
2)(16х-170)+2 (7х-165)=85х+1400-(56х-58)=
3)1350+5(у+100)=15 (у-10)-589=
4)17 (х+13)-19 (х-21)+249=25 (5х-53)-3 (7+576)=
2)(16х-170)+2 (7х-165)=85х+1400-(56х-58)=
3)1350+5(у+100)=15 (у-10)-589=
4)17 (х+13)-19 (х-21)+249=25 (5х-53)-3 (7+576)=
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z+11z=3972;
12z=3972;
z=331;
2) 16x-170+14x-330=85x+1400-56x+58;
30x-85x+56x=1958;
x=1958;
3) 1350+5y+500=15y-150-589;
-10y=-2589;
y=258,9;
4) 17x+221-19x+399+249=125x-1325-21-4032;
-2x-125x=-6247;
x≈49,19