Question

Alguém q saiba fazer essas contas????

A) 4x-3-x+8=11


B)9+2(x-4)=21

Answer 1

 A) 4x-x=11+3-8
3x=6
x=6/3 
x=2.

B)9+2x-8=21
2x=21-9+8
x= 20/2
x= 10

Answer 2

a) 4x - 3 - x + 8 = 11
4x - x = 11 + 3 - 8
3x = 14 - 8
3x = 6
x = 6/3
x = 2


b) 9 + 2(x-4) = 21
9 + 2x - 8 = 21
2x = 21 - 9 + 8
2x = 29 - 9
2x = 20
x = 20/2
x = 10