Question

$$2 x + 3 y + 7 x y , 4 x y + x y - 10 , - 8 x y + 7 x = - 10 y + 9$$

Answer

x=-(-10*y+9)/105+y/35

Solution


Simplify  \(2x+3y+-107x\)  to  \(2x+3y-107x\).
\[2x+3y-107x=-10y+9\]
Simplify  \(2x+3y-107x\)  to  \(-105x+3y\).
\[-105x+3y=-10y+9\]
Factor out the common term \(3\).
\[-3(35x-y)=-10y+9\]
Divide both sides by \(-3\).
\[35x-y=-\frac{-10y+9}{3}\]
Add \(y\) to both sides.
\[35x=-\frac{-10y+9}{3}+y\]
Divide both sides by \(35\).
\[x=\frac{-\frac{-10y+9}{3}+y}{35}\]
Simplify  \(\frac{-\frac{-10y+9}{3}+y}{35}\)  to  \(-\frac{\frac{-10y+9}{3}}{35}+\frac{y}{35}\).
\[x=-\frac{\frac{-10y+9}{3}}{35}+\frac{y}{35}\]
Simplify  \(\frac{\frac{-10y+9}{3}}{35}\)  to  \(\frac{-10y+9}{3\times 35}\).
\[x=-\frac{-10y+9}{3\times 35}+\frac{y}{35}\]
Simplify  \(3\times 35\)  to  \(105\).
\[x=-\frac{-10y+9}{105}+\frac{y}{35}\]