\( \begin{array}{l} 52 x+42 x+6 x+6 x=-3+15 \\ x=-31 \\ 52 \\ \text { 2) } 5 x+3(x+1)=7-5(2 x+3) \\ 5 x+3 x+2=7-10 x-15\end{array} \)
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Beyond the Answer
Did you know that simplifying equations like this one has roots in ancient mathematics? The Babylonians were some of the first to use algebra around 2000 BC, employing a method akin to what we do now, balancing equations and solving for unknowns. They didn’t have a symbol for variables, but they sure knew how to wiggle their numbers around to find the answers! In the world today, these algebraic techniques are invaluable, whether you're budgeting money, determining distances in GPS, or even coding in software development! Mastering these skills helps enhance logical reasoning and problem-solving abilities, making you a valuable asset in any career from engineering to finance. So next time you delve into algebra, remember you're part of a centuries-old tradition that has real-world effects!