Question

1) resolva cada equaçao :



a) x + 3 = 8
    
b) 2x + 3 = 10     

c) 2x + 5 = 17      

d) 2. (x + 1)= 15

Answer 1

Olá

Vamos lá,

a) x + 3 = 8
x= 8 -3
x= 5
     
b) 2x + 3 = 10      
2x=10-3
2x=7
x=7/2

c) 2x + 5 = 17    
 2x=7-5
2x=2
x=2/2
x=1 

d) 2. (x + 1)= 15
2x+2=15
2x=15-2
2x=13
x=13/2