ВЫЧЕСЛЕТЕ (1/2)^5*128-(0.1)^4*25000= СКАЖИТЕ НУЖНО

a) x-8≥2(x+½)+7

x-8≥2x+1+7

x-8≥2x+8

x-2x≥8+8

-x≥16

x≤-16

b) x(x+3)>(x+1)(x+3)

x²+3x>x²+4x+3

x²+3x-x²-4x>3

-x>3

x<-3

c) (3x-1)/5-(x+1)/2<1-x/7

2(3x-1)/10-5(x+1)/10<1-x/7

(6x-2-5x-5)/10<7/7-x/7

(x-7)/10<(7-x)/7

(70*(x-7))/10<(70*(7-x))/7

7*(x-7)<10*(7-x)

7x-49<70-10x

7x+10x<70+49

17x<119

x<119/17

x<7

d) (9x+2)/10-(10x-2)/9>2

(9*(9x+2)-10*(10x-2))/90>2

(81x+18-100x+20)/90>2

(-19x+38)/90>2

(90*(-19x+38))/90>2*90

-19x+38>180

-19x>180-38

-19x>-142

x<-142/19

x<-7 9/19