Answer
$x = 21$
Work Step by Step
Use distributive property first:
$0.2(x) + (0.2)(8) - 3.4 = 2.4$
Multiply to simplify:
$0.2x + 1.6 - 3.4 = 2.4$
Combine like terms on the left side of the equation:
$0.2x - 1.8 = 2.4$
Add $1.8$ to both sides of the equation to isolate variables on the left side of the equation:
$0.2x = 4.2$
Divide both sides of the equation by $0.2$ to solve for $x$:
$x = 21$