Question

(49-39)×х=24 12÷х+10=13

Answer 1

(49-39)*х=24
10x=24
x=12/5 
x=2 2/5 или х=2.4

12÷х+10=13
х≠0
12/x+10=13
12/x=13-10
12/x=3
12=3x
3x=12
x=4