Solve 20.8x+12.9y=99

$$20.8 x + 12.9 y = 99$$

Solve for x

$$x=-\frac{129y}{208}+\frac{495}{104}$$

Steps for Solving Linear Equation

Subtract 12.9y from both sides.

$$20.8x=99-12.9y$$

The equation is in standard form.

$$20.8x=-\frac{129y}{10}+99$$

Divide both sides of the equation by 20.8, which is the same as multiplying both sides by the reciprocal of the fraction.

$$\frac{20.8x}{20.8}=\frac{-\frac{129y}{10}+99}{20.8}$$

Dividing by 20.8 undoes the multiplication by 20.8.

$$x=\frac{-\frac{129y}{10}+99}{20.8}$$

Divide 99-\frac{129y}{10} by 20.8 by multiplying 99-\frac{129y}{10} by the reciprocal of 20.8.

$$x=-\frac{129y}{208}+\frac{495}{104}$$

Solve for y

$$y=-\frac{208x}{129}+\frac{330}{43}$$

Steps for Solving Linear Equation

Subtract 20.8x from both sides.

$$12.9y=99-20.8x$$

The equation is in standard form.

$$12.9y=-\frac{104x}{5}+99$$

Divide both sides of the equation by 12.9, which is the same as multiplying both sides by the reciprocal of the fraction.

$$\frac{12.9y}{12.9}=\frac{-\frac{104x}{5}+99}{12.9}$$

Dividing by 12.9 undoes the multiplication by 12.9.

$$y=\frac{-\frac{104x}{5}+99}{12.9}$$

Divide 99-\frac{104x}{5} by 12.9 by multiplying 99-\frac{104x}{5} by the reciprocal of 12.9.

$$y=-\frac{208x}{129}+\frac{330}{43}$$