1)4x-21<3x+31
4x-3x<31+21
x<52
2)(x+5)+4-x>-8
x+5+4-x>-8
x-x>-8-5-4
0*x>-17
<span> 1 2 6 7 4 3 8 5 11 9 10 </span>
<span> (600:30-7)*5(24-4*4)*(32:16)+60:4*10=1040+150=1190</span>
<span>1)600:30=20</span>
<span>2)20-7=13</span>
<span>3)4*4=16</span>
<span>4)24-16=8</span>
<span>5)32:16=2</span>
<span>6)13*5=65</span>
<span>7)65*8=520</span>
<span>8)520*2=1040</span>
<span>9)60:4=15</span>
<span>10)15*10=150</span>
<span>11)1040+150=1190</span>
Обозначим длину за x.
5+1/7=36/7
36/7=9/14x
x=36/7*14/9=8
V=высота*длина*ширина=36/7*8*7=288 (см^3)
<span>-7+..3.= -4 </span>
<span><span>-7+(-3)= -10</span></span>
<span><span><span>7+(-3)=4</span></span></span>
<span><span><span><span>(-9)+8=-1</span></span></span></span>
<span><span><span><span><span>(-9)+(-8) = -17</span></span></span></span></span>
<span><span><span><span><span><span>9+(-8)=1</span></span></span></span></span></span>
<span><span><span><span><span><span><span>9+(-9)=0</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span>(-11)+11=0</span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span>-12+12=0 </span></span></span></span></span></span></span></span></span>