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Simplifying -3(2 + 4h) + -7 = 3 + -4(4 + 3h) (2 * -3 + 4h * -3) + -7 = 3 + -4(4 + 3h) (-6 + -12h) + -7 = 3 + -4(4 + 3h) Reorder the terms: -6 + -7 + -12h = 3 + -4(4 + 3h) Combine like terms: -6 + -7 = -13 -13 + -12h = 3 + -4(4 + 3h) -13 + -12h = 3 + (4 * -4 + 3h * -4) -13 + -12h = 3 + (-16 + -12h) Combine like terms: 3 + -16 = -13 -13 + -12h = -13 + -12h Add '13' to each side of the equation. -13 + 13 + -12h = -13 + 13 + -12h Combine like terms: -13 + 13 = 0 0 + -12h = -13 + 13 + -12h -12h = -13 + 13 + -12h Combine like terms: -13 + 13 = 0 -12h = 0 + -12h -12h = -12h Add '12h' to each side of the equation. -12h + 12h = -12h + 12h Combine like terms: -12h + 12h = 0 0 = -12h + 12h Combine like terms: -12h + 12h = 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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