Решите уравнение: с решением. 1) 5(3-2у)-4(9-у)=3(у+5); 2) 14(2х-3)-5(х+4)=2(3х+5)+5х; 3) 9(3х-7)+3(8х-11)=3(9х+8); 4) 6(7х-11)-13(х-6)=14(2х+1);
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Ответы на вопрос:
1) 15-10у-36+4у=3у+15 -10у+4у-3у=15-15+36 -9у=36 у=36: (-9) у= -4 2) 28х-42-5х-20=6х+10+5х 28х-5х-6х-5х=10+42+20 12х=72 х=6
5/12> 2/9; 5/12 = 15/362/9 = 8/3615/36> 8/36=====================9/35 > 3/28; 9/35 = 36/1403/28 = 15/14036/140> 15/140===============4/9 < 8/15; 4/9 = 20/458/15 = 24/4520/45 < 24/45========================1/8 < 7/12; 1/8 = 3/247/12 = 14/243/24< 14/24==================5/9 < 3/4; 5/9 = 20/363/4 = 27/3620/36 < 27/36=============3/4 > 2/5; 3/4 = 15/202/5 = 8/2015/20> 8/20================23/40 > 3/8; 3/8 = 15/4023/40 > 15/40==============3/4 > 1/63/4 = 9/121/6 = 2/129/12 > 2/12
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