( х+74 ) - 91 = 35 54 - (х - 19)=38

( х+74 ) - 91 = 35 x+74-91=35 x-17=35 x=35+17 x=52 54 - (х - 19)=38 54-x+19=38 73-x=38 x=73-38 x=35

x+74-91=35; x=35+91-74; x= 52; 2)54-x+19=38; 54+19-38=x ; x=35