Question

a) (+7x) + (-3x) =

b) (-8x) + (+11x) =

c) (-2y) + (-3y) =

d) (-2m) + (-m) =

e) (+5a²) + (-3a²) =

f) (+5x) + (-5x) =

g) (+6x) + (-4x) =

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Answer 1

a) 7x - 3x = 5x
b) -8x + 11x = 2x
c) -2y - 3y = - 5y
d) -2m - m = - 3m
e) 5a^2 - 3a^2 = 2a^2
f) 5x - 5x = 0
g) 6x - 4x = 2x

Answer 2

Resposta:

a)

(+7x)+(-3x) =+7x-3x =+4x

b)

(-8x)+(+11x)= -8x+11x = 3x

c)

(-2y)+(-3y)=-2y-3y=-5y

d)

(-2m)+(-m) =-2m-m=-3m

e)

(+5a²)+(-3a²)=5a²-3a² =2a²

f)

(+5x)+(-5x) =+5x-5x=0x=0

g)

(+6x)+(-4x)=+6x-4x = +2x