Solve 0.66y=-0.8x+21

$$0.66 y = - 0.8 x + 21$$

Solve for x

$$x=-\frac{33y}{40}+26.25$$

Steps for Solving Linear Equation

Swap sides so that all variable terms are on the left hand side.

$$-0.8x+21=0.66y$$

Subtract 21 from both sides.

$$-0.8x=0.66y-21$$

The equation is in standard form.

$$-0.8x=\frac{33y}{50}-21$$

Divide both sides of the equation by -0.8, which is the same as multiplying both sides by the reciprocal of the fraction.

$$\frac{-0.8x}{-0.8}=\frac{\frac{33y}{50}-21}{-0.8}$$

Dividing by -0.8 undoes the multiplication by -0.8.

$$x=\frac{\frac{33y}{50}-21}{-0.8}$$

Divide \frac{33y}{50}-21 by -0.8 by multiplying \frac{33y}{50}-21 by the reciprocal of -0.8.

$$x=-\frac{33y}{40}+\frac{105}{4}$$

Solve for y

$$y=-\frac{40x}{33}+\frac{350}{11}$$

Steps for Solving Linear Equation

The equation is in standard form.

$$0.66y=-\frac{4x}{5}+21$$

Divide both sides of the equation by 0.66, which is the same as multiplying both sides by the reciprocal of the fraction.

$$\frac{0.66y}{0.66}=\frac{-\frac{4x}{5}+21}{0.66}$$

Dividing by 0.66 undoes the multiplication by 0.66.

$$y=\frac{-\frac{4x}{5}+21}{0.66}$$

Divide -\frac{4x}{5}+21 by 0.66 by multiplying -\frac{4x}{5}+21 by the reciprocal of 0.66.

$$y=-\frac{40x}{33}+\frac{350}{11}$$