5/7 + 4/5 - 23/35 = 25/35 + 28/35 - 23/35 = 30/35 = 6/7
<span>5a+(a-8)-(2a-4)=5a+a-8-2a+4=4a-4
(6x-1)+(8-x)-(3-2x)=6x-1+8-x-3+2x=7x+7
7+(3a-2)-(4+2a)-11+3a=7+3a-2-4-2a-11+3a=4a-10
5m-(3m+5)+(2m-4)=5m-3m-5+2m-4=4m-9</span>
{x - 2y = -10
⁺{11x + 2y = 34
12x = 24
x = 2
11x + 2y = 34
11*2 + 2y = 34
22 + 2у = 34
2y = 34 - 22
2у = 12
y = 6 ← ордината точки В
1; 2; 3; 4; 5;
Вроде так))
1)1/4*(-2)³+3*(-1)²=1/4*(-8/1)+3*1=-2+3=1
2)1/3*(-3)²+3*(-2)³=1/3*9/1+3*(-8)=3-24=-21