1,3(x+20y)-40(0,9-x)+63y; 77(1,1a-3b)-3,2(4,5b-50a)+99a; 25(x+2)-4(y-3)-(25x-4y+61); 7,5(3x-5)+(80-39y)-0,3(10+78x-130x) срочно!!!!

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