Question

Me ajuuuuudeeem!É para sexta feira 10/11!

Answer 1

a)6x+x=14  
   7x=14
   x=14/7
   x=2
 
b)x+7=0
x=0-7
x=-7
 
c)7x+1-5x=9
7x-5x=9-1
2x=8
x=8/2
x=4

d)21x+1=11x+6
21x-11x=6-1
10x=5
x=5/10
x=0,5

e)4.(x-2)=4+2(x-1)
4x-8=4+2x+2
4x-2x=4+2+8
2x=6+8
2x=14
x=14/2
x=7