Упростить: 1)15х+8у-х-7у 2)2*5в-1+3 3)4*(3в+2)-2*(2в-3) 4)2а-(3а-(4а-5)) 5)2/3 (дробью) 6)2/3*(х-6у)-1/3*(2х-у) / - это дробь
1)14x+y 2)10b+2 3)8b+14 4)3a-5 5)0,[6] (шесть в периоде) 6)четыре целых одна третья y
1)15х+8у-х-7у=14x+y 2)2*5в-1+3=2/5+3=0,4+3=3,4 3)4*(3в+2)-2*(2в-3)=12в+8-4в+6=8в+14 4)2а-(3а-(4а-5))=2а-(3а-4а+5)=2а-3а+4а-5=3а+5 5)2/3 (дробью) ???????? 6)
![\frac{2}{3}*(x-6y)-\frac{1}{3}*(2x-y)=\frac{2}{3}x-\frac{2}{3}*6y-\frac{1}{3}*2x+\frac{1}{3}*y=\\\
=\frac{2}{3}x-4y-\frac{2}{3}x+\frac{1}{3}y=-4y+\frac{1}{3}y=-3\frac{2}{3}y](https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7B3%7D%2A%28x-6y%29-%5Cfrac%7B1%7D%7B3%7D%2A%282x-y%29%3D%5Cfrac%7B2%7D%7B3%7Dx-%5Cfrac%7B2%7D%7B3%7D%2A6y-%5Cfrac%7B1%7D%7B3%7D%2A2x%2B%5Cfrac%7B1%7D%7B3%7D%2Ay%3D%5C%5C%5C%0A%3D%5Cfrac%7B2%7D%7B3%7Dx-4y-%5Cfrac%7B2%7D%7B3%7Dx%2B%5Cfrac%7B1%7D%7B3%7Dy%3D-4y%2B%5Cfrac%7B1%7D%7B3%7Dy%3D-3%5Cfrac%7B2%7D%7B3%7Dy "\frac{2}{3}*(x-6y)-\frac{1}{3}*(2x-y)=\frac{2}{3}x-\frac{2}{3}*6y-\frac{1}{3}*2x+\frac{1}{3}*y=\\\
=\frac{2}{3}x-4y-\frac{2}{3}x+\frac{1}{3}y=-4y+\frac{1}{3}y=-3\frac{2}{3}y")