Question

Resolva as equações do 1º grau abaixo.
a-) 2x = 30
C-) 2x - 40 = – 30
b-) - 2x = 30
d-) 4x - 6 = 34
e-) 5x + 3 = -47
9-) 8t + 5 = -2t + 13
f-) 12y - 5 = 10y + 12
h-) - 3 (x - 1) = -4x + 7
1-) 3m - 4 = 12
i-) 5y + 7 = 2 (y - 6)
k-) 14x - 1 = -15

PORFAVOR RESPONDAM​

Answer 1

Resposta:

A) x=15

x= 30/2

x=15

B) x= -15

x= 30/-2

x= -15

C) x=5

2x= -30+40

x=10/2

x=5

D) x= 10

4x= 34+6

x= 40/4

x=10

E) x= -44/5

5x=-47-3

x=-44/5

F) t= 8/10

8t + 2t = 13 - 5

10t= 8

t = 8/10

G) y= 17/2

12y - 10y = 12 + 5

2y= 17

y= 17/2

H) x= 4

-3x + 3 = -4x + 7

-3x + 4x = 7 - 3

x = 4

I) m= 16/3

3m = 12 + 4

3m = 16

m= 16/3

J) y= -19/3

5y + 7 = 2y - 12

5y - 2y = -12 - 7

3y = -19

y= -19/3

K) x= -1

14x= -15 + 1

x= -14/14

x= -1