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Simplifying 21x + -7 = 5 + 19x Reorder the terms: -7 + 21x = 5 + 19x Solving -7 + 21x = 5 + 19x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19x' to each side of the equation. -7 + 21x + -19x = 5 + 19x + -19x Combine like terms: 21x + -19x = 2x -7 + 2x = 5 + 19x + -19x Combine like terms: 19x + -19x = 0 -7 + 2x = 5 + 0 -7 + 2x = 5 Add '7' to each side of the equation. -7 + 7 + 2x = 5 + 7 Combine like terms: -7 + 7 = 0 0 + 2x = 5 + 7 2x = 5 + 7 Combine like terms: 5 + 7 = 12 2x = 12 Divide each side by '2'. x = 6 Simplifying x = 6
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