Jika keliling 34 cm. Tentukan nilai x. pake cara ya..thanks

34=2x+3+3x-1+2x+4
34=7x+6
34-6=7x
28=7x
4=x

AB = (2x + 3) cm
AC = (3x - 1) cm
BC = (2x + 4) cm

Keliling = 34 cm
AB + AC + BC = 34
(2x + 3) + (3x - 1) + (2x + 4) = 34
2x + 3x + 2x + 3 - 1 + 4 = 34
7x + 6 = 34
7x = 34 - 6
7x = 28
x = 28/7
x = 4 cm