Question

7- Encontre o valor da incógnita nas seguintes equações:
a) x + 2 = 5
f) 3x = 7
b) x - 11 = 0
g) 5x + 1 = 16
c) 4x = -8
h) 2x - 7 = 9
d) x - 2 = -1
1) 4x + 1 = 37
e) 6x = 6​

Answer 1

a) x + 2 = 5

x = 5-2

x = 3

f) 3x = 7

x = 7/3

x = 2,333...

b) x - 11 = 0

x = 11

g) 5x + 1 = 16

5x = 16-1

5x = 15

x = 15/5

x = 3

c) 4x = -8

x = -8/4

x = -2

h) 2x - 7 = 9

2x = 9 - 7

x = 2/2

x = 1

d) x - 2 = -1

x = -1 + 2

x = 2-1

x = 1

1) 4x + 1 = 37

4x = 37-1

x = 36/4

x =9

e) 6x = 6

x = 6/6

x = 1