solve and verify 9x = 15 7-6x
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9x=157-6x
9x+6x=157
15x=157
x=157/15
checking...
(9*157/15)=157-(6*157/15)
471/5=157-(314/5)
471/5=(785-314)/5
471/5=471/5
9x+6x=157
15x=157
x=157/15
checking...
(9*157/15)=157-(6*157/15)
471/5=157-(314/5)
471/5=(785-314)/5
471/5=471/5
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