Question

resolva as inequações a) 9x-5(3-2x)>7x+9 B) 4y-5<2(y+3)+5y

Answer 1

a) 9x-5(3-2x)>7x+9
9x -15+10x > 7x +9
19x-7x > 9+15
12x > 24
x > 2

B) 4y-5 <2(y+3)+5y
4y-5 < 2y +6 +5y
4y-2y-5y < 6+5
-3y < 11. (-1)
3y > -11
y > 11/3