Question

Resolva as seguintes equações:
a) 18x - 43 = 65
b) 2x + 6 = x + 18  
c) 2x + 3 (x - 5) = 4x + 9 
d) 7x - 1 = 13
e) 6x - 10 = 2x + 14

(Por favor coloque as contas) 

Answer 1

18x -43 =65
18x= 65-43
18x = 22
x= 22/18

2x+6=x+18
2x-x= 18-6
x = 12

2x + 3 (x - 5) = 4x + 9
2x +3x -15 = 4x +9
2x +3x -4x= 9+15
x = 24

 7x - 1 = 13
7x = 14
x = 2

 6x - 10 = 2x + 14
6x - 2x = 24
4x = 24
x = 6

Answer 2

18x-43=65
18x=65+43
18x=108
x=108/18
x=6

2x+6=x+18
2x-x=18-6
x=12

2x+3(x-5)=4x+9
2x+3x-15=4x+9
2x+3x-4x=9+15
x=24

7x-1=13
7x=13+1
7x=14
x=14/7
x=2

6x-10=2x+14
6x-2x=14+10
8x=24
x=24/8
x=3