Question

X+(24+36)=65. (40-21)+x=59

Answer 1

x+(24+36)=65;
x+60=65;
x=65-60;
x=5.

(40-21)+x=59;
19+x=59;
x=59-19;
x=40.

Answer 2

X+(24+36)=65
X+24+36-65 = 0
Х = 5
Ответ: Х = 5.

(40-21)+x=59
х = 59 - 40 + 21 = 40
Ответ: х = 40.