5/4y+5/4y+3x=21

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Solution for 5/4y+5/4y+3x=21 equation: 


x in (-oo:+oo)

3*x+(5/4)*y+(5/4)*y = 21 // - 21

3*x+(5/4)*y+(5/4)*y-21 = 0

3*x+5/2*y-21 = 0 // - 5/2*y-21

3*x = -(5/2*y-21) // : 3

x = (-(5/2*y-21))/3

x = (21-(5/2*y))/3

x = (21-(5/2*y))/3

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