Question

1) Resolva as equações a seguir

A) x-5=9
B) 2x-1=3
C) x-7=-2x+2
D) 4+2x=-3x+8
E) -x-2=7
F) 2x=3x-1
G) x-6=4+2x

Answer 1

a) x-5=9
x=9+5
x=14
b) 2x -1 = 3
2x = 3+1
2x=4
x=2
c) x -7= -2x+2
x+2x=2+7
3x=9
x=3
d) 4+2x=-3x+8
2x+3x=8-4
5x=4
x=4/5
e) -x-2=7
-x=7+2
-x=9 (-1)
x=-9
f) 2x=3x-1
2x -3x=-1
-1x=-1 (-1)
x= 1
g) x-6=4+2x
x -2x= 4 + 6
-x = 10 (-1)
x= -10