-63=-4a-5a-9

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Solution for -63=-4a-5a-9 equation:


a in (-oo:+oo)

-63 = -4*a-(5*a)-9 // + -4*a-(5*a)-9

5*a-(-4*a)-63+9 = 0

4*a+5*a-63+9 = 0

9*a-54 = 0 // + 54

9*a = 54 // : 9

a = 54/9

a = 6

a = 6

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