EXERCÍCIOS
1) Efetue:
a) (+7x) + (-3x) =
b) (-8x) + (+11x) =
c) (-2y) + (-3y) =
d) (-2m) + (-m) =
e) (+5a²) + (-3a²) =
f) (+5x) + (-5x) =
g) (+6x) + (-4x) =
h) (-6n) + (+n) =
i) (+8x) – ( -3x) =
j) (-5x) – (-11x) =
k) (-6y) – (-y) =
l) (+7y) – (+7y) =
m) (-3x) – (+4x) =
n) (-6x) – ( -x) =
o) (+2y) – (+5y) =
p) (-m) –(-m) =
2) Efetue :
a) (+ 3xy) – (-xy) + (xy) =
b) (+ 15x) – (-3x) – (+7x) + (-2x) =
c) (-9y) –( +3y) – (+y) + (-2y) =
d) (3n) + (-8n) + (+4n) – (-5n) – (-n) =
3) Efetue:
a) (+1/2x) + (-1/3x) =
b) ( -2/5x) + (-2/3x) =
c) (-7/2y) + (+1/4y) =
d) (+2m) +( -3/4m) =
e) (+2/3x) - ( -3/2x) =
f) (-3/4y) – (+1/2y) =
g) (+2/5m) – (+2/3m) =
h) (-3x) –(-2/5x) =
4) Calcule os monômios
a) 2x + 3x =
b) 6y – 4y + 5y =
c) 3a – 6a – a =
d) 2/5 x²y 3/2 x²y =
e) 1/2ab – 3ab =
f) 7b + 4b – 6b =
g) 3/2 y – 2y + 7/3 y =
h) 3/5 x + x =
i) 8xy – 4xy + 4xy – 8xy =
j) 3/7 x + 41/8 x =
k) -x² + 2/5 x² =
l) -3p -7p + 18p =
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