Solve multi-step linear equations, including equations requiring simplification first.
Distribute, simplify, then solve
Problem
Solve \(2(x~+~3)~+~4~=~18\) for \(x\).
Big Picture
What this problem is really about
First remove the parentheses by multiplying two by both terms inside, then combine the resulting constants. That produces a simpler two-step equation with one variable term and one constant. Undo the constant before the coefficient, and check the value in the original grouped form.
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