Question

1)resolva na incógnita x. a) (a-b)x+(a+b)x=2a b) x-a/b=2 -x-b/a

Answer 1

a) (a - b).x + (a + b).x = 2a
x.[(a - b) + (a + b)] = 2a
x.[a - b + a + b] = 2a
x.2a = 2a
x = 2a/2a = 1

b) x - a/b = 2 - x - b/a
x + x = 2 - b/a + a/b
2x = (2ab - ba + ab)/ab
2x = 2ab/ab
2x = 2
x = 2/2 = 1