Addition, Difficulty Level =4
4*x=4
x=
x-2=1
x=
4-x=1
x=
1÷x=1
x=
x*1=2
x=
3÷x=3
x=
x*1=5
x=
x*2=4
x=
8÷x=4
x=
5+x=7
x=
x-3=0
x=
5*x=15
x=
x÷4=4
x=
5+x=9
x=
x÷5=5
x=
4÷x=4
x=