10/2.8=a/4.2

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Solution for 10/2.8=a/4.2 equation: 


a in (-oo:+oo)

10/2.8 = a/4.2 // - a/4.2

10/2.8-(a/4.2) = 0

10/2.8-0.23809524*a = 0

3.57142857-0.23809524*a = 0 // - 3.57142857

-0.23809524*a = -3.57142857 // : -0.23809524

a = -3.57142857/(-0.23809524)

a = 14.99999987

a = 14.99999987

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