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Simplifying 21x + -3 = 4(x + -10) Reorder the terms: -3 + 21x = 4(x + -10) Reorder the terms: -3 + 21x = 4(-10 + x) -3 + 21x = (-10 * 4 + x * 4) -3 + 21x = (-40 + 4x) Solving -3 + 21x = -40 + 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. -3 + 21x + -4x = -40 + 4x + -4x Combine like terms: 21x + -4x = 17x -3 + 17x = -40 + 4x + -4x Combine like terms: 4x + -4x = 0 -3 + 17x = -40 + 0 -3 + 17x = -40 Add '3' to each side of the equation. -3 + 3 + 17x = -40 + 3 Combine like terms: -3 + 3 = 0 0 + 17x = -40 + 3 17x = -40 + 3 Combine like terms: -40 + 3 = -37 17x = -37 Divide each side by '17'. x = -2.176470588 Simplifying x = -2.176470588
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