Question

Resolva as equações:
a) 4x - 6 = 22
b) 9 - x = 2x
c) 8 + 4 x = 6x - 4
d) 3x + 1 = x + 9
e) 4x - 11 = 7 - 2x
f) 13x + 1 -10x = 5 + x​

Answer 1

a) 4x-6= 22

4x= 22+6

4x= 28

x= 28/4

x= 7

b) 9-x= 2x

-x-2x= -9

-3x= -9

x= -9/ -3

x= 3

c) 8+4x= 6x-4

4x-6x= -4-8

-2x= -12

x= -12/ -2

x= 6

d) 3x+1= x+9

3x-x= 9-1

2x= 8

x= 8/2

x= 4

e) 4x-11= 7-2x

4x+2x= 7+11

6x= 18

x= 18/6

x= 3

f) 13x+1-10x= 5+x

13x-10x-x= 5-1

2x= 4

x= 4/2

x= 2