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Simplifying 4x + 7 = 6x + -21 Reorder the terms: 7 + 4x = 6x + -21 Reorder the terms: 7 + 4x = -21 + 6x Solving 7 + 4x = -21 + 6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6x' to each side of the equation. 7 + 4x + -6x = -21 + 6x + -6x Combine like terms: 4x + -6x = -2x 7 + -2x = -21 + 6x + -6x Combine like terms: 6x + -6x = 0 7 + -2x = -21 + 0 7 + -2x = -21 Add '-7' to each side of the equation. 7 + -7 + -2x = -21 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = -21 + -7 -2x = -21 + -7 Combine like terms: -21 + -7 = -28 -2x = -28 Divide each side by '-2'. x = 14 Simplifying x = 14
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