Пошаговое объяснение:
a) 7x+4(x-2)>6(1+3x)
7x+4x-8>6+18x
11x-8>6+18x
11x-18x>6+8
-7x>14
x<14/(-7)
x<-2
x∈(-∞; -2)
b) (5+2x)/3>(x-3)/5 +(x+5)/2
(10(5+2x))/30>(6(x-3)+15(x+5))/30
50+20x>3(2x-6+5x+25)
50+20x>3(7x+19)
50+20x>21x+57
21x-20x<50-57
x<-7
x∈(-∞; -7)
Пошаговое объяснение:
a) 7x+4(x-2)>6(1+3x)
7x+4x-8>6+18x
11x-8>6+18x
11x-18x>6+8
-7x>14
x<14/(-7)
x<-2
x∈(-∞; -2)
b) (5+2x)/3>(x-3)/5 +(x+5)/2
(10(5+2x))/30>(6(x-3)+15(x+5))/30
50+20x>3(2x-6+5x+25)
50+20x>3(7x+19)
50+20x>21x+57
21x-20x<50-57
x<-7
x∈(-∞; -7)