Question

24 - x = 15

13 + x = 37

x - 56 = 41

x - 391 = 9

152 + x = 257

392 - x = 22

517 - x = 420

Answer 1

1) 24 - x = 15;  x = 24 - 15;  x = 9;

2) 13 + x = 37;  x = 37 - 13;  x = 24;

3) x - 56 = 41;  x = 41 + 56;  x = 97;

4) x - 391 = 9;  x = 9 + 391;  x = 400;

5) 152 + x = 257;  x = 257 - 152;  x = 105;

6) 392 - x = 22;  x = 392 - 22;  x = 370;

7) 517 - x = 420;  x = 517 - 420;  x = 97;