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Simplifying 7(3x + -4) + 8 = -21x + 36 Reorder the terms: 7(-4 + 3x) + 8 = -21x + 36 (-4 * 7 + 3x * 7) + 8 = -21x + 36 (-28 + 21x) + 8 = -21x + 36 Reorder the terms: -28 + 8 + 21x = -21x + 36 Combine like terms: -28 + 8 = -20 -20 + 21x = -21x + 36 Reorder the terms: -20 + 21x = 36 + -21x Solving -20 + 21x = 36 + -21x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21x' to each side of the equation. -20 + 21x + 21x = 36 + -21x + 21x Combine like terms: 21x + 21x = 42x -20 + 42x = 36 + -21x + 21x Combine like terms: -21x + 21x = 0 -20 + 42x = 36 + 0 -20 + 42x = 36 Add '20' to each side of the equation. -20 + 20 + 42x = 36 + 20 Combine like terms: -20 + 20 = 0 0 + 42x = 36 + 20 42x = 36 + 20 Combine like terms: 36 + 20 = 56 42x = 56 Divide each side by '42'. x = 1.333333333 Simplifying x = 1.333333333
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