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Simplifying 3x + 4 = -40 + 7x Reorder the terms: 4 + 3x = -40 + 7x Solving 4 + 3x = -40 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 4 + 3x + -7x = -40 + 7x + -7x Combine like terms: 3x + -7x = -4x 4 + -4x = -40 + 7x + -7x Combine like terms: 7x + -7x = 0 4 + -4x = -40 + 0 4 + -4x = -40 Add '-4' to each side of the equation. 4 + -4 + -4x = -40 + -4 Combine like terms: 4 + -4 = 0 0 + -4x = -40 + -4 -4x = -40 + -4 Combine like terms: -40 + -4 = -44 -4x = -44 Divide each side by '-4'. x = 11 Simplifying x = 11
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