Question

1) resolva as equações do 1° grau:

a) 8 x - 11 = 4x + 13

EX: R= 8 x - 4x = 13 + 11
4 x = 24
x = 24
-------
4
x = 6

b) 9 x - 8 = 37

EX: R= 9 x = 37 + 8
9 x = 45
x = 45
-----
9
x = 5

c) x + 5 = 8

d) x + 9 = -1

e) 4 = x - 10

f) 2 x -10 + 7 x + 10 = 180

g) 7 y - 10 = y + 50

h) 5 x - 91 = 4x - 77​

Answer 1

Resposta:

c) x = 3

d) x = - 10

e) x = 14

f) x = 20

g) y = 10

Explicação passo a passo:

c) x + 5 = 8

x = 8 - 5

x = 3

d) x + 9 = -1

x = -1 -9

x = -10

e) 4 = x - 10

10 + 4 = x

x = 14

f) 2x - 10 + 7x + 10 = 180

9x = 180 + 10 - 10

x = 20

g) 7y - 10 = y + 50

7y - y = 50 + 10

6y = 60

y = 10