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Simplifying 105x + -90 = 15(7x + -6) Reorder the terms: -90 + 105x = 15(7x + -6) Reorder the terms: -90 + 105x = 15(-6 + 7x) -90 + 105x = (-6 * 15 + 7x * 15) -90 + 105x = (-90 + 105x) Add '90' to each side of the equation. -90 + 90 + 105x = -90 + 90 + 105x Combine like terms: -90 + 90 = 0 0 + 105x = -90 + 90 + 105x 105x = -90 + 90 + 105x Combine like terms: -90 + 90 = 0 105x = 0 + 105x 105x = 105x Add '-105x' to each side of the equation. 105x + -105x = 105x + -105x Combine like terms: 105x + -105x = 0 0 = 105x + -105x Combine like terms: 105x + -105x = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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