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8 x 9 =6(8+2x)
72 =48 +12x
72 - 48=12x
24 =12x
x =2
2. 6/8 = 20/8+be
6(8+be) = 8 x 20
48 + 6be = 160
6be = 160-48
6be = 112
be = 18,67