Модуль числа не бывает отрицательным(с минусом),поэтому на минусы внимания обращать не нужно.
-11
1) -0,8а*0,45b*(-c) = 0.36abc
2) m*(-0.75n)*(-0.6k)= 0.45mnk
3)3*(1.6x-0.7y)-1.8x+0.1y= 3*1.6x - 3*0.7y -1.8x+0.1y=
= (4.8x-1.8x)+(-2.1y +0.1y)= 3x - 2y
4)-5(0.9m-1.1n)-1.5m+1.9n= -4.5m -(-5.5n )-1.5m+1.9n=
= (-4.5m-1.5m)+(5.5n+1.9n) = -6m +7.4n= 7.4n-6m
x • 5= 1021 - 796
x • 5= 225
x = 225 ÷ 5
x = 45
45 • 5 = 1021 - 796
45 • 5 = 225
225 = 225
Ответ : 45
<span>6</span>⁷<span>/</span>₁₅<span> - 2</span>³<span>/</span>₁₅<span> = 4</span>⁷⁻³<span>/</span>₁₅<span> = 4</span>⁴<span>/</span>₁₅
<span>
9</span>¹¹<span>/</span>₁₆ <span>+ 4</span>³<span>/</span>₁₆<span> - 2</span>²<span>/</span>₁₆<span> = 13</span>¹⁴<span>/</span>₁₆<span> - 2</span>²<span>/</span>₁₆<span> = 11</span>¹²<span>/</span>₁₆<span> = 11</span>³<span>/</span>₄
<span>
6</span>⁵<span>/</span>₁₄<span> - 2</span>¹¹<span>/</span>₁₄<span> = 5</span>¹⁹<span>/</span>₁₄<span> - 2</span>¹¹<span>/</span>₁₄<span> = 3</span>⁸<span>/</span>₁₄<span> = 3</span>⁴<span>/</span>₇
<span>
19</span>¹¹<span>/</span>₃₅<span> -12</span>²⁹<span>/</span>₃₅<span> = 18</span>⁴⁶<span>/</span>₃₅<span> - 12</span>²⁹<span>/</span>₃₅<span> = 6</span>⁴⁶⁻²⁹<span>/</span>₃₅ = 6¹⁷/₃₅