Answer
$4x=2x-30$
$x=-15$
Work Step by Step
"Product" indicates multiplication. The number preceding "less" is the subtrahend. "Twice" indicates multiplication by 2.
$4x=2x-30$ $\longrightarrow$addition property
$4x-2x=2x-30-2x$ $\longrightarrow$simplify
$2x=-30$ $\longrightarrow$multiplication property
$2x\div2=-30\div2$ $\longrightarrow$simplify
$x=-15$ $\longrightarrow$
