Question

8) Resolva as seguintes equações
a) 7(x - 5) = 3 (x + 1) (R=19/2 ou 38/4)
b) 3 (x - 2) = 4 (-x + 3) (R=18/7)
c) 2 (x +1) - (x - 1) = 0 (R= -3)
d) 5(x + 1)-3 (x +2) = 0 (R= 1/2)
e) 13 + 4(2x - 1) = 5 (x+2) (R=1/3)
f) 4(x + 5) + 3 (x +5)= 21 (R=-2)
g) 2 (x +5 ) - 3 (5 - x) = 10 (R=3)
h) 8 (x-1) = 8 -4(2x - 3) (R= 7/4)​

Answer 1

Explicação passo-a-passo:

A)

7x-35=3x+3

4x=38

x=38/4 (÷2)

x=19/2

B)

3x-6=-4x+12

7x=18

x=18/7

C)

2x+2-x+1=0

x=-3

D)

5x+5-3x-6=0

2x=1

x=1/2

E)

13+8x-4=5x+10

3x=1

x=1/3

F)

4x+20+3x+15=21

7x=-14

x=-14/7

x=-2

G)

2x+10-15+3x=10

5x=15

x=15/5

x=3

H)

8x-8=8-8x+12

16x=28

x=28/16 (÷2)

x=14/8 (÷2)

x=7/4