Решение задания смотри на фотографии
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A) x-y=9
-y=-x+9
y=x-9
k=1 m=-9
б) у-7х=11
у=7х+11
к=7 m=11
в) у-х=15
у=х+15
к=1 m=15
г) 35х-у=8
-у=-35х+8
у=35х-8
к=35 m= -8
<span>2<span>a^3</span>+<span>a^2</span>−1−3<span>a^2</span>+<span>a^3</span>−a=</span><span>3<span>a^3</span>−2<span>a^2</span>−1−a=</span><span><span>3<span>a^3</span>−2<span>a^2</span>−a−1</span></span>