Răspuns :
g)873-x=243
x=873-243
X= 430
h)x-215=772
772+215= 987
i)7815-x+737=3511
7815-3511= 4304
7815-4304= 3511
g)873-x=243
-x=243-873
-x=-630
x=630
h) x-215=772
x = 722 + 215
x = 987
i) 7815 - x + 737 = 3511
8552 - x = 3511
-x = 3511 - 3511 - 8552
-x = -5041
x = 5041