a ) a + ( 3 + 5 ) x 6 = 29 x 9
a + 8 x 6 = 261
a + 48 = 261
a = 261 - 48
a = 213
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b ) a - ( 9 x 3 + 7 ) = 28 x 3
a - ( 27 + 7 ) = 84
a - 34 = 84
a = 84 + 34
a = 118
