Question

4-sabendo que a//b//c, determine o valor de x.???????????????????? ​

Answer 1

x+1/4 = 7-x/12

12.(x+1) = 4.(7-x)

12x+12= 28-4x

12x - 4x = 28 -12

8x = 16

x = 16/8

x = 2