15.
[tex]FH=2\cdot UH\\\\5x-7=2\cdot19\\\\5x=38+7\\\\5x=45\quad|:5\\\\\boxed{x=9}[/tex]
16.
[tex]KU=UM\\\\3x+3=4x-4\\\\4x-3x=3+4\\\\\boxed{x=7}[/tex]
Answer:
15) x=9 16) x=7
Step-by-step explanation:
19(2)=5x-7
38=5x-7
5x=38+7
5x=45
x=45/5
x=9
-----------------
3x+3=4x-4
3=4x-3x-4
3=x-4
x=3+4
x=7
