20n/4+3(n+7)-12

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Solution for 20n/4+3(n+7)-12 equation: 


n in (-oo:+oo)

3*(n+7)+(20*n)/4-12 = 0

3*(n+7)+5*n-12 = 0

3*(n+7)+5*n-12 = 0

8*n-12+21 = 0

8*n+9 = 0

8*n+9 = 0

8*n+9 = 0 // - 9

8*n = -9 // : 8

n = -9/8

n = -9/8

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