Question

Date
۔
J Simplily the following 21_3+31_6+15_12
کلا​

Answer 1

Answer:

there will be no _, it is -.

Step-by-step explanation:

21-3+31-6+15-12

21+31+15-3-6-12

52+15-3-6-12

66-3-6-12

63-6-12

57-12

45

answer is 45