Question

Alguém sabe responder?

Answer 1

A) 2x=7,5.3---> 2x=22,5--> x=22,5/2
x=11,25
B) 1=2/3

Answer 2

a) 3.15 =2.2x =>
 45 =4x =>
 x=45/4 =>
 x=11,25

B)3.(x+6) =2.(x-6) =>
   3x+18 =2x -12 =>
3x-2x=-12-18 =>
x= -30