2m-4=20

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Solution for 2m-4=20 equation: 


m in (-oo:+oo)

2*m-4 = 20 // - 20

2*m-20-4 = 0

2*m-24 = 0 // + 24

2*m = 24 // : 2

m = 24/2

m = 12

m = 12

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