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Simplifying 7 + 3z = 11 + 3z Add '-3z' to each side of the equation. 7 + 3z + -3z = 11 + 3z + -3z Combine like terms: 3z + -3z = 0 7 + 0 = 11 + 3z + -3z 7 = 11 + 3z + -3z Combine like terms: 3z + -3z = 0 7 = 11 + 0 7 = 11 Solving 7 = 11 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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