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Simplifying 4k + 3(k + -10) = 7(k + -3) Reorder the terms: 4k + 3(-10 + k) = 7(k + -3) 4k + (-10 * 3 + k * 3) = 7(k + -3) 4k + (-30 + 3k) = 7(k + -3) Reorder the terms: -30 + 4k + 3k = 7(k + -3) Combine like terms: 4k + 3k = 7k -30 + 7k = 7(k + -3) Reorder the terms: -30 + 7k = 7(-3 + k) -30 + 7k = (-3 * 7 + k * 7) -30 + 7k = (-21 + 7k) Add '-7k' to each side of the equation. -30 + 7k + -7k = -21 + 7k + -7k Combine like terms: 7k + -7k = 0 -30 + 0 = -21 + 7k + -7k -30 = -21 + 7k + -7k Combine like terms: 7k + -7k = 0 -30 = -21 + 0 -30 = -21 Solving -30 = -21 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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