4a+9-7a=15

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Solution for 4a+9-7a=15 equation: 


a in (-oo:+oo)

4*a-(7*a)+9 = 15 // - 15

4*a-(7*a)-15+9 = 0

4*a-7*a-15+9 = 0

-3*a-6 = 0 // + 6

-3*a = 6 // : -3

a = 6/(-3)

a = -2

a = -2

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