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Simplifying 7(-3) = 4(x + 5) Multiply 7 * -3 -21 = 4(x + 5) Reorder the terms: -21 = 4(5 + x) -21 = (5 * 4 + x * 4) -21 = (20 + 4x) Solving -21 = 20 + 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 + -4x = 20 + 4x + -4x Combine like terms: 4x + -4x = 0 -21 + -4x = 20 + 0 -21 + -4x = 20 Add '21' to each side of the equation. -21 + 21 + -4x = 20 + 21 Combine like terms: -21 + 21 = 0 0 + -4x = 20 + 21 -4x = 20 + 21 Combine like terms: 20 + 21 = 41 -4x = 41 Divide each side by '-4'. x = -10.25 Simplifying x = -10.25
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