Question

Решите систему неравенств : 4-x<2x-3   3-x>-7

Answer 1

$left{begin{array}{ccc}4-x < 2x-3\3-x > -7end{array}right\\left{begin{array}{ccc}-x-2x < -3-4\-x > -7-3end{array}right\left{begin{array}{ccc}-3x < -7&/:(-3)\-x > -10&/cdot(-1)end{array}right\left{begin{array}{ccc}x > frac{7}{3}\x < 10end{array}right\\\underline{underline{xinleft(frac{7}{3}; 10right)}}$