Question

Resolva as equações. A) 7x/13=5/2. B) -5x=18. C) 12+2x=12-7x.

Answer 1

A) 14x = 65
x = 65/14
x = 4,64

B) x = 18 + 5
x = 23

C) 2x + 7x = 12 - 12
9x = 0
x = - 9