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Simplifying -15v + -21 = 3(-5v + -7) Reorder the terms: -21 + -15v = 3(-5v + -7) Reorder the terms: -21 + -15v = 3(-7 + -5v) -21 + -15v = (-7 * 3 + -5v * 3) -21 + -15v = (-21 + -15v) Add '21' to each side of the equation. -21 + 21 + -15v = -21 + 21 + -15v Combine like terms: -21 + 21 = 0 0 + -15v = -21 + 21 + -15v -15v = -21 + 21 + -15v Combine like terms: -21 + 21 = 0 -15v = 0 + -15v -15v = -15v Add '15v' to each side of the equation. -15v + 15v = -15v + 15v Combine like terms: -15v + 15v = 0 0 = -15v + 15v Combine like terms: -15v + 15v = 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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