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Simplifying 7x + -15 = x + 4 Reorder the terms: -15 + 7x = x + 4 Reorder the terms: -15 + 7x = 4 + x Solving -15 + 7x = 4 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. -15 + 7x + -1x = 4 + x + -1x Combine like terms: 7x + -1x = 6x -15 + 6x = 4 + x + -1x Combine like terms: x + -1x = 0 -15 + 6x = 4 + 0 -15 + 6x = 4 Add '15' to each side of the equation. -15 + 15 + 6x = 4 + 15 Combine like terms: -15 + 15 = 0 0 + 6x = 4 + 15 6x = 4 + 15 Combine like terms: 4 + 15 = 19 6x = 19 Divide each side by '6'. x = 3.166666667 Simplifying x = 3.166666667
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