Respostas
Resposta:
Explicação passo-a-passo:
a)
5(x-1)=2(x+6)
5x-5=2x+12
5x-2x=12+5
3x=7
x=7/3
x=2,33
---------------------
b)
4(x-5)=3(x-1)
4x-20=3x-3
4x-3x=-3+20
x = 23
----------------------
c)
2x-12=x+5
2x-x=5+12
x=17
------------------------
d)
7x-3=5x+5
7x-5x=5+3
2x=8
x=8/2
x=4
--------------------
e)
2x/4=6
2x=6*4
2x=24
x=24/2
x=12
-----------------------
f)
6x-3=4(x-1)
6x-3=4x-4
6x-4x=-4+3
2x=7
x=7/2
x=3,5
------------------------
g)
2x-13=x+5
2x-x=5+13
x=18
------------------------
h)
4x-8=2x-6
4x-2x=-6+8
2x=14
x=14/2
x=7
-------------------------
i)
5x/3=-5
5x= -5*3
5x= -15
x= -15/5
x= -3
-----------------------
j)
2(x+1)=x-7
2x+2= x-7
2x-x=-7-2
x=-9
---------------------
k)
3(x-4)=2(x-5)
3x-12=2x-10
3x-2x=-10+12
x=22
-----------------------
l)
m)
4x+7=x-3
4x-x= -3-7
3x= -10
x= -10/3
x = 3,33
--------------------
n)
2x+5=3x-6
2x-3x=-6-5
-x=-11 (*-1)
x = 11
Espero ter ajudado