Question

2)resolva as seguintes Equaçoes: a)2x+5-5x=-1
b)5+6x=5x+2
c)x+2x-1-3=x
d)-3+10=2x+8+1
e)5x-+x=9+x
f)7x-4-x=2x+8-3x
g)-x-5+4x=-7+6x+15
h)3x-2x=3x=3x+2
i)2-4x=32-18x+12
j)2x-1=-3+x+4
k)3x-2-2x=2-3x
l)10-9x+2x=2-3x pessoal me ajudem por favor!!!! vale de 0a10
m)2-3x=-2x+12-3x
n)3x-x+4=10
o)4x+9=-x-1
p)-81=1-2x

Answer 1

a)2x+5-5x= -1
=2x-5x+5=-1
=-3x= -1-5
= -3x= -6
=x= -6÷ -3
=x=2
x=2

b)5+6x=5x+2
=5-2=5x - 6x
=3= -1x
=x= -3
x= -3

c)x+2x-1-3=x
=3x-4=x
=3x-x=4
=2x=4
=x=2
x=2

d)-3+10=2x+8+1
=7=2x+9
= -2x=9-7
=-2x=2
=x= -1
x=-1

e)wrong question

f)7x-4-x=2x+8-3x
=7x-x-4=2x-3x+8
=6x-4= -1x+8
=6x+1x=8+4
=7x=12
=x=12/7
x=12/7

g) -x-5+4x=-7+6x+15
=-x+4x-5= -7+15+6x
=3x-5=8+6x
=3x-6x=8+5
= -3x=13
=x= -13/3
x=-13/3

h)3x-2x=3x=3x+2
x=3x-3x=2
x=2

i)2-4x=32-18x+12
2=32+12-18x-4x
2=44-22x
22x =44-2
22x =42
x=21/11

j)2x-1=-3+x+4
2x-x=-3+4+1
1x=2
x=2

k)3x-2-2x=2-3x
3x-2x+3x=2+2
4x=4
x=1

l)10-9x+2x=2-3x
-9x+2x+3x=2-10
-4x= -8
x=2

m)2-3x=-2x+12-3x
-3x+2x+3x=12-2
2x=10
x=5

n)3x-x+4=10
2x=10-4
2x=6
x=3

o)4x+9=-x-1
4x+x= -1-9
5x=-10
x=-2

p)-81=1-2x
2x=1+81
2x=82
x=41