Name: ________ Date:_________
Finding the unknown value (S13)
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1
2
–
2
=
3
5
2
3
–
1
=
5
3
3
1
–
x
=
3
2
10
4
x
–
1
=
3
2
10
5
3
–
x
=
1
4
3
12
6
x
–
3
=
1
3
5
15