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

we can do this by substituting the values of a,b,c,d as e upon 4 ,e x 4,e - 4 ,e +4 in the equation a+b+c+d=100 respectivly
then we get the value of e as 16 , which satisfies all the equations