Х-38=15, х+72=99, 42-х=19

Question

Х-38=15, х+72=99, 42-х=19

Answer 1

1) x-38 =15
x=38+ 15
x=53
 2) x+72=99
 x=99-72
x= 27
3)  42-x=19
x= 42-19
x=23