Question

Efetue as adições algébricas:
a)3a/2b + 5a/3b
b)7b/3x + 2a/4x^2
c)×/2y - y/2x
d)1/2m + 1m^3 - 1/2m
por favor com os cálculos . Os resultados são :
a)19a/6b
b)28bx+6a/12x^2
c)x^2-y^2/2xy
d)m+2m^2/2m^2

Answer 1

a) 3a/2b + 5a/3b = 
9a/6b + 10a/6b =
(9a + 10a)/6b =

19a/6b

b) 7b/3x + 2a/4x² =
28bx/12x² + 6a/12x² =
(28bx + 6a)/12x² =
2(14bx + 3a)/12x² =

(14bx + 3a)/6x²

c) x/2y - y/2x =
x²/2xy - y²/2xy =

(x² - y²)/2xy

d) 1/2m + 1/m² - 1/2 =
m/2m² + 2/2m² - m²/2m² =
(m + 2 - m²)/2m² =

(- m² + m + 2)/2m²