Solve for x 10(0.4+0.5x)=4x

$10 (0.4 + 0.5 x) = 4 x$

Simplify $10 (0.4 + 0.5 x)$ .

Start simplifying.

$0 + 0 + 10 (0.4 + 0.5 x) = 4 x$

Simplify by adding zeros.

$10 (0.4 + 0.5 x) = 4 x$

Apply the distributive property.

$10 \cdot 0.4 + 10 (0.5 x) = 4 x$

Multiply.

Multiply $10$ by $0.4$ .

$4 + 10 (0.5 x) = 4 x$

Multiply $0.5$ by $10$ .

$4 + 5 x = 4 x$

Move all terms containing $x$ to the left side of the equation.

Subtract $4 x$ from both sides of the equation.

$4 + 5 x - 4 x = 0$

Subtract $4 x$ from $5 x$ .

$4 + x = 0$

Subtract $4$ from both sides of the equation.

$x = - 4$