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a/a+2=6/9
a(9)=6(a+2)
9a=6a+12
9a-6a=12
3a=12
a=12/3
a=4
b+8/8=9/6
6(b+8)=8×9
6b+48=72
6b=72-48
6b= 24
b=24/6
b=4
b)
a/a+8=6/10
10a=6a+48
10a-6a=48
4a=48
a=48/4
a=12
b/9=10/6
6b=90
b=90/6
b=15