Repuesta:
1.[tex]2x -6 =8; x=5\\ 2x-6+6=8+6\\2x=14\\\frac{2x}{2}=\frac{14}{2}\\x=7[/tex]
3.[tex]\frac{x+15}{3}=9\\\frac{3\left(x+15\right)}{3}=9\cdot \:3\\x+15=27\\x+15-15=27-15\\x=12[/tex]
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Repuesta:
1.[tex]2x -6 =8; x=5\\ 2x-6+6=8+6\\2x=14\\\frac{2x}{2}=\frac{14}{2}\\x=7[/tex]
3.[tex]\frac{x+15}{3}=9\\\frac{3\left(x+15\right)}{3}=9\cdot \:3\\x+15=27\\x+15-15=27-15\\x=12[/tex]