Question

A x 4 = E
B ÷ 4 = E
C + 4 = E
D - 4 = E
___________
& A + B + C + D = 100

Challenge
*what is the value of E ?*

Answer 1

these equation are substituting type. just substitute the equation in the parent equation and get the answer. answer uplaoded via photograph.

Answer 2

The value of E is 16. Here is the attachment !