1 – Resolva as equações:
a) 3x-7= 2x+5
b) 7x+8= 4x-10
c) 4x-15= -2x+3
d) 2x-4-8= 4x
e) 3x= x+1+7
f) 360+36x= 30x
g) 2x+5-5x= -1
h) 5+6x= 5x+2
i) x+2x-1-3= x
j) -3x+10= 2x+8+1
k) 5x-5+x= 9+x
l) 7x-4-x= -2x+8-3x
m) –x-5+4x= -7x+6x+15
n) 3x-2x= 3x+2
o) 2-4x= 32-18x+12
Respostas:
a) x=12
b) x=-6
c) x=3
d) x=-6
e) x=4
f) x=-60
g) x=2
h) x=-3
i) x=2
j) x=1/2
k) x=14/5
02) Resolva as equações:
a) 7(x-5)= 3(x+1)
b) 3(x-2)= 4(-x+3)
c) 2(x+1)-(x-1)= 0
d) 5(x+1)-3(x+2)= 0
e) 13+4(2x-1)= 5(x+2)
f) 4(x+5)+3(x+5)= 21
g) 2(x+5)-3(5-x)= 10
h) 8(x-1)= 8-4(2x-3)
Respostas:
a) x=19/2
b) x=18/7
c) x=-3
d) x=1/2
e) x=1/3
f) x=-2
g) x=3
h) x=7/4
03) Resolva as seguintes equações:
a) x/4 - x/6 = 3
b) 3x/4 - x/3 = 5
c) x/5 - 1 = 9
d) x/3 - 5 = 0
e) x/2 + 3x/5 = 6
f) x/5 + x/2 = 7/10
Obs: As barras são as frações
Respostas:
a) x=36
b) x=12
c) x=50
d) x=15
e) x=60
f) x=1
