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Solve the system of equations. If there is no solution to the system, give a reason.
-Solve using the addition method.
Q19: If <span class="ql-formula" data-value="g (
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Q40: <span class="ql-formula" data-value="\begin{array}{l}(x)=x^{3} \\5(x)=x^{3}+3\end{array}"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mtable
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Q157: x < 1 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6914/.jpg" alt="x <