m<FJI=90°, so
[tex]x + x + 4 + 3x - 9 = 90 \\ 5x = 95 \\ x = 19[/tex]
Answer: x=19
Answer:
x=73
Step-by-step explanation:
3x-9+x+4+x=360
5x-5=360
5x=360+5
5x=365
x=365÷5
