(adsbygoogle = window.adsbygoogle || []).push({}); basic algebra question plz help :(

when combining the two equations

Vb-0.5FAC = 10

Hb -0.866FAC = -2

It brings the answer 1.732Vb - Hb = 19.32

can someone plx explain to me how this answer came about

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# Basic algebra question

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