Exc 11.5
Q 1 d to h
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h)2n=11-1
2n=10
n=10÷2=5
f)x=0+2
X=2
e)20-8=2x
12=2x
12÷2=X
6=X
C)4÷2=2
2=2
a) 17-7=X
10=X
d) 21-19=8
2=8
8÷2=4
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