Question

Gente Ajuda ai pf!!!!!!!!!! :

a) 3x-(x+1)=-x+1

b) 2x+4.(38-x)=136

c) 2(2x+5)-(4x-9)=3(3-4x)

ajudaaaaa

Answer 1

a) 3x-x-1 = -x+1
2x-1 = -x+1
2x+x = 1 +1
3x = 2
x= 2/3

b) 2x + 152-4x=136
-2x=136-152
-2x= -16
x= -16/-2
x=8

c)4x +5 -4x+9=9-12x
14= 9 -12x
14-9 = -12x
5 = -12x
5/-12 =x
-5/12 =x