1. 30
2. 14
3. 6
4. 1
5. 2
6. 7×(x+2)=56
x+2=56/7
x=8-2
x=6
7. 12÷(x-2)=3
x-2=3×12
x-2=36
x=36+2
x=38
8. (7+5)×x=36
12×x=36
x=36÷12
x=3
9. (7-5)×x+3=7
(7-5)×x=7-3
2×x=4
x=4÷2
x=2
10. (8÷2)+(6×2)
=4+12
=16
11. 4×4=16
12. 16÷4=4
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