Answer
$x=5$
Work Step by Step
$3x-4=11$ $\longrightarrow$addition property
$3x-4+4=11+4$ $\longrightarrow$combine like terms
$3x=15$ $\longrightarrow$multiplication property
$3x\div3=15\div3$ $\longrightarrow$simplify
$x=5$
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