Question

answer it fast sis and bro

Answer 1

$x_{1} = 5+7 = 12$

$18 = 5 + 7+x_{2}$

$x_{2} = 18-12=6$

$x_{3}= 18+5=23$

$x_{3} +x_{4} = 30$

$23+x_{4} = 30$

$x_{4} = 7$

Answer 2

Answer:

pls mark as braainstorm

that s yu rr ans