Решите неравенство 3х-8≤7

3х-8<_7 3х<_ 7+8 3х<_15 х<_5

[latex]3x-8 \leq 7[/latex] [latex]3x-8 \leq 7|+8[/latex] [latex]3x-8+8 \leq 7+8[/latex] [latex]3x\leq 15[/latex] [latex]3x\leq 15|*\frac{1}{3}[/latex] [latex]3x*\frac{1}{3}\leq 15*\frac{1}{3}[/latex] [latex]\frac{3x}{3}\leq \frac{15}{3}[/latex] [latex]\frac{3*x}{3*1}\leq \frac{5*3}{1*3}[/latex] [latex]\frac{x}{1}\leq \frac{5}{1}[/latex] [latex]x\leq 5[/latex] [latex]x\in(+\infty;5][/latex] Ответ: [latex](+\infty;5][/latex]