4a-5=7a-20

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Solution for 4a-5=7a-20 equation: 


a in (-oo:+oo)

4*a-5 = 7*a-20 // - 7*a-20

4*a-(7*a)-5+20 = 0

4*a-7*a-5+20 = 0

15-3*a = 0 // - 15

-3*a = -15 // : -3

a = -15/(-3)

a = 5

a = 5

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