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Simplifying 4a + 3x = 12a + x Solving 4a + 3x = 12a + x Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-12a' to each side of the equation. 4a + -12a + 3x = 12a + -12a + x Combine like terms: 4a + -12a = -8a -8a + 3x = 12a + -12a + x Combine like terms: 12a + -12a = 0 -8a + 3x = 0 + x -8a + 3x = x Add '-3x' to each side of the equation. -8a + 3x + -3x = x + -3x Combine like terms: 3x + -3x = 0 -8a + 0 = x + -3x -8a = x + -3x Combine like terms: x + -3x = -2x -8a = -2x Divide each side by '-8'. a = 0.25x Simplifying a = 0.25x
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