Question

Determine o conjunto verdade das equações ,Sendo U=Q. A)3-2x=7-3x , B)-9+3y-1=y+7 , C) -6x=-36 , D)-2=3-3x , E)x-3x+5=1-x , F) -(p+4)+3(1+p)-p=2(1+2p)

Answer 1

a) 3-2x = 7-3x
3x-2x = 7-3
x = 4

b) -9+3y-1 = y+7
3y-y = 7+9
2y = 16
y = 8

c) -6x = -36
6x = 36
x = 6

d) -2 = 3-3x
3x = 3+5
3x = 8
x = 8/3

e) x-3x+5 = 1-x
x+x-3x = 1-5
-x = -4
x = 4

f) -(p+4)+3(1+p)-p = 2(1+2p)
-p+4 +3+3p-p = 2+4p
-p-p-4p+3p = 2-3-4
-6p+3p = 2-7
-3p = -5
3p = 5
p = 5/3