gente me ajudem nas inequaçoes a)9×-5(3-2×)>7×+9= b)4y-5<2(y+3)+5y c)6t-(5t+8)≤1-2(5-t) respondam porfavor
Soluções para a tarefa
Respondido por
13
Olá,
Vamos lá,
a)9×-5(3-2×)>7×+9
9x-15+10x>7x+9
9x+10x-7x>9+15
12x>24
x>24/12
x>2
b)4y-5<2(y+3)+5y
4y-5<2y+6+5y
4y-2y-5y<6+5
-3y<11 *(-1)
y>11/3
c)6t-(5t+8)≤1-2(5-t)
6t-5t-8≤1-10+2t
6t-5t-2t≤1-10+8
-t≤-1 *(-1)
t≥1
Vamos lá,
a)9×-5(3-2×)>7×+9
9x-15+10x>7x+9
9x+10x-7x>9+15
12x>24
x>24/12
x>2
b)4y-5<2(y+3)+5y
4y-5<2y+6+5y
4y-2y-5y<6+5
-3y<11 *(-1)
y>11/3
c)6t-(5t+8)≤1-2(5-t)
6t-5t-8≤1-10+2t
6t-5t-2t≤1-10+8
-t≤-1 *(-1)
t≥1
lani4:
vlw
obrigado Lani4 !!
Perguntas interessantes