Question

resolva as equacoes e obtenha a solucao de cada uma sabendo que u=Q.
a)3x-9=9
b)x-5=-7
c)y-6=5y+8
d)10x=20+9x
e)2x+5-x=5-3x
f)2m+6=m
g)2x+1=15
h)5-x-20=5x-10-7x
i)x+6=2-3x

obs:conter os calculos .por favor ,muito obrigado

Answer 1

a) 3x-9=9
3x=9+9
3x=18
x=18/3
x=6
b)x-5=-7
x=-7+5
x=-2
c)y-6=5y+8
y-5y=8+6
-4y=14
y= 14/-4
simplifica por 2
14÷2=7
4÷2=2
y= 7/2
d)10x=20+9x
10x-9x=20
1x=20
x=20
e)2x+5-x=5-3x
2x-x+3x=5-5
4x=0
x=0/4
x=0
f)2m+6=m
2m-m=6
1m=6
m=6
g)2x-1= 15
2x=15+1
2x=16
x=16/2
x=8
h)5-x-20=5x-10-7x
x-5x+7x=-10-5+20
3x=5
x=5/3
i)x+6=2-3x
x+3x=2-6
4x=-4
x=-4/4
x=-1


Espero ter ajudado!