Question

Efetue:

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

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

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

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

e) ( - 72 x ) + ( + 14x )=

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

g) ( - 6y ) - ( - y )=

h) ( - 5x ) - ( - 11x )=

i) ( + 7y) - ( + 7y )=

Answer 1

Resposta:

a) 7x + (-3x) =  7x - 3x = 4x

b) -8x + 11x = 3x

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

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

e) -72x + 14x = -58x

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

g) -6y - (-y) = -6y + y = -5y

h) -5x - (-11x) = - 5x + 11x = 6x

i) 7y - 7y = 0y