Answer
$x=-6$
Work Step by Step
$-4(x+7)-30=3-37\rightarrow$ apply distributive property
$-4x-28-30=-34\rightarrow$ simplify
$-4x-58=-34\rightarrow$ add 58 to each side
$-4x-58+58=-34+58\rightarrow$ simplify
$-4x=24\rightarrow$ divide each side by -4
$-4x\div-4=24\div-4\rightarrow$ simplify
$x=-6$