How do you solve $(15-a)/3=-9$ ?

Dec 24, 2016

$(15-a)/3=-9$

or, $(15-a)/3**3=-9*3$

or, $15-a=-27$

or, $15-15-a=-27-15$

or, $-a=-42$

or, $cancel(-)a=cancel(-)42$

or, $a=42$

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How do you solve (15-a)/3=-9(15-a)/3=-9?