Solve 4x + 7 = 3x + 12 — x = 5

Problem

$4x + 7 = 3x + 12$

Step-by-step solution

Move all $x$ terms to the left and constants to the right.
Subtract $3x$ from both sides: $4x - 3x + 7 = 12$ , i.e. $x + 7 = 12$ .
Subtract $7$ from both sides: $x = 12 - 7 = 5$ .

Answer

$x = 5$

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