Question

determine as soluções de cada um :
a) - 6 x+ 2 =4
b)x +2x=3-x
c)8x+64=8
d)2x-142=0
e)14x+8-x=6+2x

Answer 1

a) -6x+2=4
-6x=4-2
-6x=2
X=2/6 =1/3 -> x= 1/3
b) x+2x=3-x
x+2x+x=3
4x=3
x=3/4 -> x=0,75
c) 8x+64=8
8x=8-64
8x=-56
X=-56/8 -> x=-7
d) 2x-142=0
2x=142
X=142/2 -> x= 71
e) 14x+8-x=6+2x
14x-x-27=6-8
11x=-2
X= -2/11=1/11 -> x=11