Решите неравенство 7+6y<2(5y-8)
23\\\\y>\frac{23}{4}\\\\y>5,75\\\\y\in (5,75\; ;\, +\infty )" alt="7+6y<2(5y-8)\\\\7+6y<10y-16\\\\7+16<10y-6y\\\\23<4y\\\\4y>23\\\\y>\frac{23}{4}\\\\y>5,75\\\\y\in (5,75\; ;\, +\infty )" align="absmiddle" class="latex-formula">
3x+12 > x-13 3x-x > -13-12 2x >25. /:2 x > -12,5 Ответ: x ∈ (-12,5; +∞ )