\( 12 x+15=-15 \) g) \( 7 x-3=2 x+1+5 x \) \( 50000=20(40+2 x) \) \( 2 x+x^{2}=x^{2}-8 \) \( 2 x+1=4(2 x+4)-(4 x+8) \)
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Extra Insights
To solve the equation \( 12x + 15 = -15 \), first isolate \( x \) by subtracting 15 from both sides to get \( 12x = -30 \). Then, divide by 12 to find \( x = -2.5 \). For the equation \( 7x - 3 = 2x + 1 + 5x \), combine like terms on the right side to simplify it to \( 7x - 3 = 7x + 1 \). Subtracting \( 7x \) from both sides gives you \( -3 = 1 \), which is a contradiction—indicating no solution exists! Keep these insightful moments in mind during your mathematical adventures!
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