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Simplifying 7(x + 3) + -4x = 4(x + -2) Reorder the terms: 7(3 + x) + -4x = 4(x + -2) (3 * 7 + x * 7) + -4x = 4(x + -2) (21 + 7x) + -4x = 4(x + -2) Combine like terms: 7x + -4x = 3x 21 + 3x = 4(x + -2) Reorder the terms: 21 + 3x = 4(-2 + x) 21 + 3x = (-2 * 4 + x * 4) 21 + 3x = (-8 + 4x) Solving 21 + 3x = -8 + 4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4x' to each side of the equation. 21 + 3x + -4x = -8 + 4x + -4x Combine like terms: 3x + -4x = -1x 21 + -1x = -8 + 4x + -4x Combine like terms: 4x + -4x = 0 21 + -1x = -8 + 0 21 + -1x = -8 Add '-21' to each side of the equation. 21 + -21 + -1x = -8 + -21 Combine like terms: 21 + -21 = 0 0 + -1x = -8 + -21 -1x = -8 + -21 Combine like terms: -8 + -21 = -29 -1x = -29 Divide each side by '-1'. x = 29 Simplifying x = 29
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