Question

3 calcule:


A) 5y+3= 2y - 7


B) 2 (2x + 5) = -3x + 25


C) 3 (4x-3) = 2 (5x + 13)


D) 7-2 (8k + 1) = -1-3 (5k-2)


E) -2 (3x +1) +3 (5x-3) = x= -2


F) (4x-3)+2(x+1)=15


G) 5 (p+1= 2(p+3)


H) 3(2y-1) = 7y+5


I) 2 (7x+8)=9(3x-5)


Preciso rápido

Ofereço 55 pontos pra qm fizer

Answer 1

A) 5y+3= 2y - 7

3y = -4

y = -4/3

B) 2 (2x + 5) = -3x + 25

4x + 10 = -3x + 25

7x = 15

x = 15/7

C) 3 (4x-3) = 2 (5x + 13)

12x - 9 = 10x + 26

2x = 35

x = 35/2

D) 7-2 (8k + 1) = -1-3 (5k-2)

7 - 16k - 2 = -1 -15k -6

14 - 2 = k

k = 12

E) -2 (3x +1) +3 (5x-3) = x= -2 (n entendi os dois sinais de igual..)

F) (4x-3)+2(x+1)=15

4x - 3 +2x +2 = 15

6x -1 = 15

6x = 14

x = 14/6 = 7/3

G) 5 (p+1= 2(p+3)

5p + 5 = 2p + 6

3p = 1

p = 1/3

H) 3(2y-1) = 7y+5

6y - 3 = 7y +5

-8 = y

y = -8

I) 2 (7x+8)=9(3x-5)

14 x + 16 = 27x - 45

61=13x

x = 61/13