1) Resolva as seguintes equações
a) 3x = 15 (R=5)
b) 2x = 14 ( R=7)
c) 4x = -12 (R=-3)
d) 7x = -21 (R=-3)
e) 13x = 13 (R= 1)
f) 9x = -9 (R=-1)
g) 25x = 0 (R=0)
h) 35x = -105 (R=-3)
i) 4x = 1 (R=1/4)
j) 21 = 3x (R=7)
l) 84 = 6x (R=14)
m) x/3 =7 (R=21)
n) x/4 = -3 (R=-12)
o) 2x/5 = 4 (R=10)
p) 2x/3 = -10 (R=-15)
q) 3x/4 = 30 (R=40)
r) 2x/5 = -18 (R= -45)
Soluções para a tarefa
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a) x= 15/3
x = 3
b) x = 12/2
x = 7
c) x = -12/4
x = -3
d) x = -21/7
x = -3
e) x = 13/13
x = 1
f) x = -9/9
x= -1
g) x = 0/25
x = 0
h) x = -105/35
x = -3
i) x = 1/4
x = 1/4 ou 0.25
j) x = 21/3
x = 7
m) x = 7 x 3
x = 21
n) x = -3 x 4
x = -12
o) x = 5 x 4 / 2
x = 10
p) x = -10 x 3 / 2
x = -15
q) x = 30 x 4 = 120/3
x = 40
r) x = -18 x 5 = -90/2
x = -45
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